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ATD REW-10250 Audio Gateway Harness 2.5m Extension Kit For Mercedes SLK R171 & SL R230
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ATD REW-10250 Audio Gateway Harness 2.5m Extension Kit For Mercedes SLK R171 & SL R230

(1 review)
SKU: REW-10250
GTIN: 5061099153720
MPN: 10250
  • For Mercedes SLK & SL
  • Includes antenna cable extension
  • 2.5m cable length
  • Includes amplifier remote
  • Molded connectors to provide the perfect fit

This is a special order product. We’ll arrange for it to be delivered to our warehouse, then dispatch it to you in 3–7 working days. You’ll receive tracking once despatched

Our Price:
£99.99
RRP:   £149.99
Our Price:
Now: £83.32
RRP:   £124.99
Was:  
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To UK mainland on orders over £30.

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MAIN FEATURES

 

This Harness Extension Kit is used to retrofit vehicles with an OEM Mercedes Audio Gateway (AGW) to a universal aftermarket head unit. It allows you to relocate the connector of the OEM head unit (Audio Gateway) from the trunk of the car back into the dashboard where the aftermarket radio will be located.


The complete pinning of the Extension Harness is including CAN-Bus wires and the antenna remote wire to make it easy to retrofit the head unit by using the original steering wheel remote control functions (if OEM equipped).


Retention of the OEM subwoofers (if OEM equipped) can be achieved. You can either wire the white cables for the sub-woofer to be piggy-backed into the rear speaker channels or you can fit a new amplifier to power just the subwoofer by itself. The recommendation is to fit a new amplifier for the sub and with this in mind, the wiring has prepared RCA and amplifier remote cables into the loom for simple transfer.

 

The extension/adaptor cable is prepared for ISO and CANBUS is connected from the CAN-rail. If fitting an Android unit, you would need one of our ARL-63xxx looms or if fitting a branded unit (Kenwood, Alpine, Sony, Pioneer etc) then you would want to add the fitting stalk adapter/ steering wheel remote control to this

 

Fitment:

  • Mercedes SLK [R171] (2004-2011)
  • Mercedes SL [R230] (2005-2011)

 

Not compatible with the Harman Kardon (MOST) Sound System as the plug socket is different. However, you could remove the plug and tap into the wires as a solution.

 

UK Deliveries: Free UK mainland delivery applies to orders over £30 (exceptions apply to remote regions and islands, which will see a surcharge at checkout).


Orders Under 2kg: Most in-stock items arrive in 2–3 working days. Items held by suppliers take 4–6 working days. (Note: Saturday is not a working day).


Orders Over 2kg: Dispatched via trusted couriers including AMAZON Shipping, Royal Mail, DPD, and UPS.


Royal Mail Specifics: Royal Mail aims to deliver in 1–3 working days, though this is not guaranteed. If your item has not arrived after 7 days, please contact us. We can only replace missing items after 14 days have passed.


More information (including international delivery on our Delivery Information page.

1 Review

  • 4
    Wirings harness

    Posted by Dan Hickling on 22nd Jul 2025

    Very good.however it would have been helpful to have some instructions as not all the wiring is straight forward. I would recommend this product.

Description

MAIN FEATURES

 

This Harness Extension Kit is used to retrofit vehicles with an OEM Mercedes Audio Gateway (AGW) to a universal aftermarket head unit. It allows you to relocate the connector of the OEM head unit (Audio Gateway) from the trunk of the car back into the dashboard where the aftermarket radio will be located.


The complete pinning of the Extension Harness is including CAN-Bus wires and the antenna remote wire to make it easy to retrofit the head unit by using the original steering wheel remote control functions (if OEM equipped).


Retention of the OEM subwoofers (if OEM equipped) can be achieved. You can either wire the white cables for the sub-woofer to be piggy-backed into the rear speaker channels or you can fit a new amplifier to power just the subwoofer by itself. The recommendation is to fit a new amplifier for the sub and with this in mind, the wiring has prepared RCA and amplifier remote cables into the loom for simple transfer.

 

The extension/adaptor cable is prepared for ISO and CANBUS is connected from the CAN-rail. If fitting an Android unit, you would need one of our ARL-63xxx looms or if fitting a branded unit (Kenwood, Alpine, Sony, Pioneer etc) then you would want to add the fitting stalk adapter/ steering wheel remote control to this

 

Fitment:

  • Mercedes SLK [R171] (2004-2011)
  • Mercedes SL [R230] (2005-2011)

 

Not compatible with the Harman Kardon (MOST) Sound System as the plug socket is different. However, you could remove the plug and tap into the wires as a solution.

 

Shipping

UK Deliveries: Free UK mainland delivery applies to orders over £30 (exceptions apply to remote regions and islands, which will see a surcharge at checkout).


Orders Under 2kg: Most in-stock items arrive in 2–3 working days. Items held by suppliers take 4–6 working days. (Note: Saturday is not a working day).


Orders Over 2kg: Dispatched via trusted couriers including AMAZON Shipping, Royal Mail, DPD, and UPS.


Royal Mail Specifics: Royal Mail aims to deliver in 1–3 working days, though this is not guaranteed. If your item has not arrived after 7 days, please contact us. We can only replace missing items after 14 days have passed.


More information (including international delivery on our Delivery Information page.

1 Review

1 Review

  • 4
    Wirings harness

    Posted by Dan Hickling on 22nd Jul 2025

    Very good.however it would have been helpful to have some instructions as not all the wiring is straight forward. I would recommend this product.

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