2004 L.H.D

Towbar, wiring

Towbar, wiring
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Op. No.: 36401 36423

A specially designed cable harness kit for the S40 and V50.

Base kit

Part. No.Description
3125759213-pinInstallation Instruction

With specification of the 13-pin, all functions are obtained such as: trailer fog light, rear, trailer back up light and plus feed.

+ Trailer module
Part. No.
31257593Installation Instruction

One of the applications below must always be selected in order for the wiring to function.

+ Application1
Part. No.Description
86984767-pin, Plus feed
86984777-pin, Fog lights, rear
86984787-pin, Back up light

The trailer module manages the electrical connection between the vehicle and trailer.

The trailer module stores any diagnostic trouble codes. The application number corresponds to the type of socket found on the cable harness for the towbar.

The trailer module is primarily designed to handle output signals to the cable harness and towbar for:

  • Direction indicators

  • Brake lights

  • Position lights

  • Back up light

  • Fog lights, rear

  • +12 V voltage

Technical data

Accessory weight:

7-pin + Trailer module:

approx. 0.6 kg (1.3 lbs)

13-pin + Trailer module:

approx. 0.9 kg (1.9 lbs)


Only one application can be used at a time with the 7 pin basic kit. However, you must always have the trailer module irrespective of basic kit type.


In accordance with ECE regulation 48, trailers with a gross weight exceeding 750 kg require a reversing light.


Trailer module (TRM) is not compatible with trailers equipped with LED lamps.

  1. Ordered according to separate procedures and downloaded using VIDA.
Last updated: 4/28/2022