Car Amplifier Integration & Bypass Cables

PLEASE NOTE: An additional patch lead is required for the steering controls depending on the make of radio being fitted. If unsure please see Full Description

Steering wheel control interface and adapter cable designed for select Hyundai ix35 (2010-2015) vehicles with amplified audio systems (ISO connections behind the radio)

Allows you to retain the use of the audio steering control buttons and the factory fitted camera when upgrading to an aftermarket head unit. 

This interface also retains the OEM amplifier and fader menu, as well as providing Speed Pulse, Reverse Gear and Amp Remote outputs.

PLEASE NOTE: This is a special product order which we don't stock. Please email our sales team for availability

ASK Amplifier Turn on for selected Porsche car models with PCM3 systems with ASK amplifiers and quadlock connection.
Connect to back of the quadlock on select Porsche PCM3 systems to turn on the factory fitted ASK amplifier.

Porsche 986/996 PCM1 BOSE Car audio radio amplifier integration ISO interface.

Connect in line on the speaker ISO cables and the interface converts the audio from high to low level to enable the BOSE amplifier to work.

PLEASE NOTE: An additional patch lead is required for the steering controls depending on the make of radio being fitted. If unsure please see Full Description

Steering wheel control interface and adapter cable designed for select Hyundai ix35 (2010-2015) vehicles with amplified audio systems (ISO connections behind the radio)

Allows you to retain the use of the audio steering control buttons when upgrading to an aftermarket head unit. 

This interface also retains the OEM amplifier and fader menu, as well as providing Speed Pulse, Reverse Gear and Amp Remote outputs.

PLEASE NOTE: To retain the factory camera, please use this interface with part number 27-245

PLEASE NOTE: An additional patch lead is required for the steering controls depending on the make of radio being fitted. If unsure please see Full Description

Steering wheel control interface and adapter cable designed for select Hyundai ix35 (2010-2015) vehicles with amplified audio systems (ISO connections behind the radio)

Allows you to retain the use of the audio steering control buttons when upgrading to an aftermarket head unit. 

This interface also retains the OEM amplifier and fader menu, as well as providing Speed Pulse, Reverse Gear and Amp Remote outputs.

PLEASE NOTE: An additional patch lead is required for the steering controls depending on the make of radio being fitted. If unsure please see Full Description

Steering wheel control interface and adapter cable designed for select Hyundai vehicles with SPDIF digitally amplified audio systems (24 and 18 PIN connections)

Allows you to retain the use of the audio steering control buttons when upgrading to an aftermarket head unit. 

This interface also retains the OEM amplified SPDIF audio system, as well as providing Speed Pulse, Reverse Gear and Amp Remote outputs.

PLEASE NOTE: An additional patch lead is required for the steering controls depending on the make of radio being fitted. If unsure please see Full Description

Car Audio Steering wheel interface allowing use of original buttons with a new aftermarket head-unit. 

This interface will also retain vehicle settings and parking sensor information, as well as providing a rear camera input.  

Suitable for Jeep Renegade (2015-2021) car models with and without original amplified Uconnect systems

ISO adapter harness for fitting a new stereo in an Audi A4, A4 Cabriolet, or A6 with an original RND-D (Navigation Plus) radio with the basic rear amplified audio system.

Also suitable for Audi TT built before November 2001.

Loose wires for connecting the cars ignition and illumination supply are provided because the RNS-D uses CANBUS data to turn on and no CAN interface is available for these cars.

ISO adapter harness for fitting a new stereo in an Audi A4, A4 Cabriolet, A6 or A8 with an original RND-D (Navigation Plus) radio with BOSE amplified audio system.

Also suitable for Audi TT built before November 2001 with BOSE amplified audio system.

Loose wires for connecting the cars ignition and illumination supply are provided because the RNS-D uses CANBUS data to turn on and no CAN interface is available for these cars.

Amplifier bypass cable for Toyota Alphard and Vellfire (AH10) with OEM Theatre Sound Amplifier

Allows you to connect a new aftermarket radio directly to the cars speakers after bypassing the original amplifier which is under the passenger seat.

Retains front and rear speakers including tweeters, centre speaker and roof speakers. Subwoofer can be retained with a new amplifier

D2B fibre optic interface to retain the use of the original fibre optic audio amplifier (Usually Bose systems in cars built between 1998 and 2005) in Mercedes C Class, CL, CLK, E Class, ML, S-Class, SL and SLK cars when fitting an aftermarket stereo upgrade. NOT FOR LATER CARS AFTER 2003 WITH MOST FIBRE OPTICS

Comes with cable to connect power and ground via ISO connections to the radio.

This is a made to order part.

PLEASE NOTE: This is a special product order which we don't stock. Please email our sales team for availability

Amplifier bypass cable for Porsche cars built between 2004-2013 with PCM 2.0 and BOSE

Allows you to connect a new aftermarket radio directly to the cars speakers after bypassing the original amplifier which is under the front seat while retaining the original subwoofer and its dedicated amplifier.

D2B fibre optic interface to retain the use of the original fibre optic audio amplifier (Usually Bose systems in cars built between 1998 and 2005) in Mercedes C Class, CL, CLK, E Class, ML, S-Class, SL and SLK cars when fitting an aftermarket stereo upgrade. NOT FOR LATER CARS AFTER 2003 WITH MOST FIBRE OPTICS.

Comes with cable to connect power and D2B wakeup to connection for original CD changer.

D2B fibre optic interface to retain the use of the original fibre optic audio amplifier (Usually Bose systems in cars built between 1998 and 2005) in Mercedes C Class, CL, CLK, E Class, ML, S-Class, SL and SLK cars when fitting an aftermarket stereo upgrade. NOT FOR LATER CARS AFTER 2003 WITH MOST FIBRE OPTICS

Interface to connect to the amplifier of a 2010 - 2015 Kia Sportage or Hyundai iX35 WITH ISO CONNECTIONS ON THE ORIGINAL RADIO as well as interfacing with the steering wheel controls.

This interface also includes a reverse signal, speed pulse and parking brake outputs, along with retention for the OEM reverse camera and aux port.

Suitable for Kia Sportage (SL) or Hyundai iX35 2010 - 2015 with original OEM amplifier and ISO connections, including models with Infinity Sound Amplifier.

Amplifier bypass cable for Porsche cars built after 2012 with PCM 3.0 and newer

Allows you to connect a new aftermarket radio directly to the cars speakers after bypassing the original amplifier which is under the front seat while retaining the original subwoofer and its dedicated amplifier.

Amplifier bypass cable for Lexus RX (XU30) built between 2004 - 2006 with original Mark Levinson Sound System

Allows you to connect a new aftermarket radio directly to the cars speakers after bypassing the original amplifier which is under the rear seat.

PLEASE NOTE: This is a special product order which we don't stock. Please email our sales team for availability

Car audio amplifier bypass cable for Cadillac CTS 2003 - 2007 and Cadillac SRX 2004 - 2006
Allows you to connect a new aftermarket radio directly to the cars speakers after bypassing the original amplifier.

Needs to be used with part 10-149 to reach the length of the car from the radio to where the original amplifier is located.

Interface to connect to the amplifier of a 2010 - 2015 Kia Sportage as well as interfacing with the steering wheel controls.

This interface also includes a reverse signal, speed pulse and parking brake outputs, along with retention for the OEM reverse camera and aux port.

MUST BE USED WITH PART 23-235

Suitable for Kia Sportage (SL) 2010 - 2015 with original OEM amplifier, including models with Infinity Sound Amplifier.

Amplifier Interface compatible with various Hyundai and Kia vehicles built from 2012 onwards.

NOT USED AS A STAND ALONE PART

Only for use with a 23 series amplifier interface for Hyundai or Kia. Please see full description for which interfaces this is compatible with.

Amplifier bypass cable for Nissan Elgrand E51 2002 - 2010 with original 5.1 Theatre Sound
Allows you to connect a new aftermarket radio directly to the cars speakers after bypassing the original amplifier which is under the front seat.

PLEASE NOTE: If your car doesn’t have steering wheel controls then use part 10-150/2.5 (power ISO extension) to also run power from the orignal amplifier wiring to the new radio. This part is sold seperately. 

Interface to connect to the CAN ignition of EU models of the Honda Civic and CRV (2012-2017) and provide ignition output as well as interfacing with the steering wheel controls and amplifier.

This interface also includes subwoofer retention and a reverse signal, speed pulse and parking brake outputs.

Suitable for European models of the Honda Civic (FK) (2012-2017) and Honda CR-V (2012-2017) with original OEM navigation.

NOT SUITABLE for retaining steering wheel controls on Chinese/unbranded head units with 2 wire SWC interface (KEY1/KEY2) 

This subwoofer retention harness (24-pin) is designed for Honda CR-V 3rd Gen (2007–2011) vehicles equipped with the original 2VN3 navigation head unit. It allows the factory subwoofer to be retained when upgrading the car stereo to an aftermarket Single or Double DIN unit. Prevents loss of bass output after stereo replacement and supports full speaker system performance.

PLEASE NOTE: This cable is designed for use with the 29-679 steering wheel control adapter which includes an amp turn on for the subwoofer

MOST fibre optic interface to retain the use of the original Bose amplifier in Porsche Boxster (986) and 911 (996) cars when fitting an aftermarket stereo upgrade.

4 channel RCA Ground Loop Isolator (With level adjustment)

Low level To Low Level Ground loop isolator.

Prevents interference when connecting amplifiers to the pre-outs of radios .

Has level adjustments to match the output of the interface to the input of the amplifier .

4 channel High level ISO to Low Level RCA adapter

This interface converts speaker outputs to low level RCA/PHONO, ideal for connecting radios that do not have pre outs or radios that have low voltage pre outs.

Also includes ground loop isolators to prevent interference.

PLEASE NOTE: Not needed for head-units with 3v or greater RCA phono outputs 

2 channel high to Low Level adapter designed for rear channel amplifiers and interfaces.

Includes a built in Ground Loop isolator to reduce electrical interference and on/off "Popping"

PLEASE NOTE: For rear channels only! Aftermarket units will only output navigation and Hands free audio through front channels 

2 channel RCA Ground Loop Isolator (With level adjustment)

2 channel Low level Phono to Low Level RCA

Includes a built in Ground Loop isolator to reduce electrical interference and on/off "Popping" to amplifiers

Use the adjustment dials on the adapter box to match the output of the radio to the input of the amplifier.

Amplifier bypass cable for Range Rover Sport and Discovery III cars fitted with standard Harman/Kardon amplifier underneath the driver's seat. Allows you to connect a new aftermarket radio directly to the car's speakers after bypassing the original amplifier.
A new extra amplifier will be needed to keep the original sub-woofer. Sound to tweeters may be lost.
NOT FOR LOGIC 7 SYSTEMS

PLEASE NOTE: SUITABLE FOR SPEAKERS ONLY, TO BE USED IN CONJUNCTION WITH OUR 29-712 or 29-758 SWC INTERFACES ONLY

Volvo V70 radio replacement adapter cable, allows the fitting of an aftermarket car stereo upgrade by adapting the original Volvo connectors to standard aftermarket ISO connectors.

This adapter cable is suitable for HU-6XX and HU-8XX original radios and will retain the use of the original amplifier in the car.

Amplifier bypass cable for Mercedes ML W164 cars with original amplified audio systems.
This cable extends from the dashboard to the amplifier in the rear of the vehicle and bypasses the amplifier to allow a new stereo to work with the original speakers in the car.

Amplifier bypass cable for Mercedes E Class W211 cars with original COMAND navigation systems.
This cable extends from the dashboard to the amplifier in the rear of the vehicle and bypasses the amplifier to allow a new stereo to work with the original speakers in the car.
A Fakra to DIN antenna adapter cable is also included.

MOST fibre optic interface to retain the use of the original Bose amplifier in Porsche Boxster 987, Cayman 987, 911 997 and Cayenne cars when fitting an aftermarket stereo upgrade.

Amplifier bypass cable for 2002 - 2005 Land Rover Range Rover L322 (Vogue) cars that have an original DSP amplifier and high line original head unit. This cable extends from the dashboard to the amplifier in the rear and bypasses the amplifier to allow a new stereo to work with the original speakers in the car.

Amplifier bypass cable for BMW X5 cars that have an original DSP amplifier. This cable extends from the dashboard to the amplifier in the rear and bypasses the amplifier to allow a new stereo to work with the original speakers in the car. 

Radio replacement interface and fascia brackets for Lexus SC430 (05-09) cars with original Mark Levinson amplified audio systems.

MOST fibre optic interface to retain the use of the original fibre optic audio amplifier (Mercedes Audio Gateway or harman/kardon amplifier) in Mercedes CL, CLS, E Class, SL and SLK cars when fitting an aftermarket stereo upgrade. NOT FOR EARLIER CARS BEFORE 2004 WITH D2B FIBRE OPTICS

Amplifier bypass cable for Range Rover sport and Discovery 3 cars with original Harman/Kardon LOGIC 7 premium sound system amplifiers under the driver's seat.

Allows you to connect a new aftermarket radio directly to the car's speakers after bypassing the original amplifier.

PLEASE NOTE: A new amplifier will be needed to keep the original sub-woofer, we recommend using a BL-RA251D compact monoblock amplifier

Axxess AXDI-FD1 car stereo replacement interface designed for select American market Ford, Lincoln, Mazda and Mercury car models.

The interface included will retain use of the factory steering wheel controls when replacing with a new aftermarket car stereo head unit.

It also retains R.A.P (Retained Accessory Power) allowing use of a factory amplifier, as well provided outputs such as parking brake, reverse and speed pulse.

Can be used on both non-amplified and amplified vehicles such as Sony®/THX® amplified systems

Comes complete with Speaker and Power ISO connectors for the UK and European markets.

Amplifier bypass cable designed for Landrover Freelander II (L359) (2006-2014) car models with original Alpine premium sound system amplifiers in the rear right quarter.

This bypass cable allows you to connect a new aftermarket radio directly to the car's speakers by bypassing/ excluding the original amplifier.

PLEASE NOTE: A separate amplifier fitting kit (AK-LR-01) will be needed if you want to keep the original sub-woofer.

ISO adapter harness for fitting a new stereo in an Audi A3, A4, A6 or TT with an original BOSE or SYMPHONY amplified audio system with ISO connectors are the back of the head.

The harness has a built in CANbus ignition interface for plug and play installation. Also provides illumination. Use with item 21-120 for antenna FM connection.

Recoil 2 Channel 80W adjustable high-to-low level subwoofer amplifier Line Output Converter (LOC) with a built-in amplifier remote trigger. This device is designed to convert 2 channels of speaker level audio into 2 channels of line level audio that can be used by car audio amplifiers.

This interface detects an audio signal and generates an amplifier turn on signal based on this, the amplifier turn on signal stays on for 60 seconds after the audio signal disappears. This allows the amplifier to stay turned on between tracks and during moments of silent audio.

Upgrade compatible Audi vehicles with this plug and play ISO radio adapter cable for rear amplified cars. This interface converts the original Audi ISO and Mini ISO connections for use with an aftermarket car stereo or head unit, while the built-in CANbus ignition interface provides ignition and illumination outputs. It also includes a phantom powered antenna adapter for a simpler, cleaner installation.

PLEASE NOTE: This interface will not generate an ignition supply on earlier Audi TT models

Amplifier bypass cable for 2000 - 2005 Jaguar XK8 cars with premium sound systems. Also fits 2000 - 2004 model Jaguar XJ cars with premium amplified audio systems.

This cable allows you to install a new aftermarket head unit radio by bypassing the cars original amplifier, allowing the new head unit to supply audio directly to the car's speakers.
Suitable for select Jaguar car models with a 12 pin white connector and Alpine AI net connector at the back of the radio.

This 2 Channel Line Out Converter (LOC) with Auto Amplifier Amp Turn On feature is designed to enhance your car's audio system by seamlessly integrating aftermarket amplifiers or audio equipment. This versatile device allows you to achieve optimal sound quality and control over your audio experience.

The converter supports various audio input connections, including speaker-level inputs and RCA inputs, making it compatible with a wide range of car audio systems.

Active Plus adjustable 2 channel line out-put converter with 12volt amp turn on circuit.

Use for adding an amplifier to standard speaker wires. (100W) max

Suits cars with and without original navigation BUT  HARD WIRE CONNECTION is needed on CRV cars with navigation .(NOT DIY PLUG AND PLAY)

Honda Civic & CR-V all in one radio replacement and SWC interface for amplified cars.
Includes steering wheel commands, ignition supply, speed pulse, illumination, reverse trigger, parking signal.

Maintains the use of the original amplifier. Keeps the ability to set the factory clock except on cars with 7inch screen. see details in full description.

Interface to connect to the CAN ignition of certain cars and trucks from General Motors and provide ignition output as well as interfacing with the steering wheel controls and original amplifier.

This interface also includes subwoofer retention and a reverse signal, speed pulse and parking brake outputs.

Suitable for certain Chevrolet and GMC models built between 2012 - 2014 with original navigation only, see long description for compatibility.

NOT SUITABLE for retaining steering wheel controls on Chinese/unbranded head units with 2 wire SWC interface (KEY1/KEY2) 

Audi adapter harness for cars with quadlock connectors at the rear of the original head unit and fully amplified audio systems.

This adapter harness has a built in CANbus ignition interface and 4x phono pre-out connectors to integrate with the original amplifier in the car, allowing audio from the new head unit to work with all the speakers and original sub woofer.

The built in CANbus interface will generate an ignition power supply to the new radio.

A double Fakra to DIN antenna adapter is also included and is wired into the adapter harness.

Volvo 6 Pin ISO amplifier integration interface with 4 channel adjustable line outputs for connecting cars with OEM amplifiers to the ISO connectors of an after-market car radio.

This interface has a 6 pin Din connector at one end and ISO connectors at the other. For Volvo cars with 6 pin Din pre-amp socket and Black power connector at the back of the radio.
Suitable for select Volvo car models with SC900, SC901, SC805 head-units.

This amplifier bypass cable is designed for select Kia and Hyundai vehicles from 2009–2019. It plugs into the OEM wiring to bypass the factory amplifier, enabling a direct connection between your aftermarket head unit and the vehicle’s speakers. Compatible with Kia Sorento, Carens, Optima, Soul, Sportage, Cee’d, ProCeed, and Hyundai ix35, i40, Santa Fe, Sonata, and Tucson models (see full list below).

PLEASE NOTE: No amplifier removal instructions are included. For vehicles with amplifiers in the rear quarter panel (such as the ix35), an extension cable 10-149/2.5 may be required.

Volvo head-unit 6 pin Din plug audio interface with high quality 4 channel adjustable line output for connecting cars with OEM amplifiers to the ISO connectors of an aftermarket car radio.

For Volvo cars with 6 pin Din pre-amp socket as well as the grey and green connectors at the back of the radio.

Suits Volvo cars with HU-601, HU-603, HU-605, HU-650 and HU-655 original head units.

Cable to connect Toyota and Lexus cars  ( after  2005) with TOYOTA/PIONEER  original amplifiers  to to a aftermarket car radio using phono line output from the radio.

Check that the connector matches the one on the back of your original radio.( For steering controls use item 29-725 instead)

if the car has a JBL amplifier you will need item 23-224

For Ford Group cars with Shaker 500 & 10000 to be uses in conjunction with ISO lead 20-143.
This cable includes amplifier turn on remote wire and phono outputs for the subwoofer.
Suitable for multiple Ford, Lincoln and Mercury cars and trucks from the US domestic market without CANbus.

This part needs to be used with a 12v-6v adapter such as our 10-671 as the amplifier has a 6v turn on.

Ford (RDS2007) Radio ISO lead/ Amplifier bypass cable.

This cable acts as an amplifier bypass cable, allowing you to drive the cars speakers directly from the new head-unit, bypassing the cars old factory amplifier.

Includes the power plug fitted behind the radio and speakers, fitted at the original amplifier.

This interface plugs in behind the radio between the cars connector and the new head-unit. It will turn on the amplifier for vehicles with J1850 Amplifier turn on signals

for Chrysler Voyager (2005-2008) and Dodge Ram (2002-2005)

PLEASE NOTE: For vehicles with steering wheel controls please use 29-630-ISO in addition to this interface

Interface to connect to the CAN ignition of certain cars and trucks from General Motors and provide ignition output as well as interfacing with the steering wheel controls and original amplifier.

This interface also includes subwoofer retention and a reverse signal, speed pulse and parking brake outputs.

Suitable for certain Buick, Cadillac, Chevrolet, GMC, Hummer, Pontiac, Saturn and Suzuki models built between 2006 - 2020, see long description for compatibility.

NOT SUITABLE for retaining steering wheel controls on Chinese/unbranded head units with 2 wire SWC interface (KEY1/KEY2) 

For BMW cars built before 2002 with 17 pin Round connector and HARMON KARDON amplifier upgrade.

Retains the use of the amplified audio system, including subwoofer.

Audi ISO and mini ISO adapter harness for rear amplified cars. This adapter comes with the option of a fly lead to be connected to the cars fuse box (hardwired) if there is no permanent 12v connection in the cars original radio wiring.

Not suitable for cars with Symphony or Bose Audio

PLEASE NOTE: This is a special product order which we don't stock. Please email our sales team for availability

Male to female car radio ISO adapter cable for connecting an aftermarket car radio to an Alfa Romeo 147 that has the OEM sub-woofer

Suitable for Alfa Romeo 147 car models with active rear speakers and an original OEM subwoofer.

Interface for Alfa Romeo vehicles with original BOSE audio system

Fits the following Alfa Romeo vehicles:

147, 156, 159, Brera and GT