Harnesses
towbar wiring harnesses


 


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Harnesses

  • Wiring harness with preparation for reverse 
  • Socket & Seal
  • Fixing pack inc. screws, ties, fuses, etc
  • A C2 double flash rate module function or relay exchange
  • ( C2 means additional indicator warning device)
  • CANbus module ( where applicable)
  • O.E module ( where applicable)
  • Installation manual 

C2 & C2 Audible Modules

Many modern vehicles are now fitted with a ECU based indicator function. This means that the old style flasher unit no longer exists in these vehicles. In order for the driver to be notified of Trailer indicator failure, a C2 module is positioned in the harness at the rear. This will activate a double flash frequency of the car indicators should a bulb fail on the trailer.
 

 

This gives you the total confidence that an indicator bulb failure is monitored in the most applicable way to suit the vehicle.



Relay replacement  -  Lamp or Audible

On vehicles equipped with flasher units, the old unit is removed and replaced with a choice of relay with 2 pins for a remote lamp mounted on the dashboard, or an alternative option of a relay with a built-in audible function. This has been engineered to sound only when additional load is detected, e.g when a trailer lighting board is fitted. This latter choice is optimum as no drilling of the dashboard is required.

 

 

CANbus modules

Multiplexed CANbus systems are becoming more and more common in modern motor vehicles.  It has also become essential for towbar wiring kits to keep module development in accord with these systems.  Therefore, in many applications, we have a CAN bus module incorporated in our kits which act as a receiver for signals passed by the car.  It becomes no longer necessary for signals to be taken directly from the rear lamp wiring harness ( with certain exceptions e.g the 3rd brake lamp), but rather directly from the CAN bus data wires.  This ensures any safety features associated with towing, operate automatically and as they were intended.
 

Fog Lamp Cut-off

All our kits have fog lamp cut-off as standard.  Either by mechanical or electrical method.

Mechanical - The fog light feed is broken with either a sprung loaded metal strip or a microswitch ( On 13 pin systems), which are housed inside the socket. The insertion of the plug into the socket forms the break.
 
 

Electrical – With this method, the contact is broken by the use of a relay which is prepared in the harness and breaks the circuit when it detects a fog light fitted on the trailer being switched on. The relay is mounted in the vehicle.

 

Diagnostically Coded - In most modern CAN-bus equipped vehicles the electronic system is re-coded for towing purposes using specialist diagnostic equipment. The vehicle detects when ever a trailer is plugged in and automatically cuts-off the fog light. (This will only work if a vehicle specific wiring kit is used).

 


 

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