standard system - for typical passenger cars suitable to the 7-pin plug of the trailer LED/bulb lamps support, PWM control trailer LED/bulb lamps support recognition of PWM steering of car lamps (analogue method) directly steering of fog-light of trailer
List price
28.00 EUR (excl. VAT)

WH1 module is essential product for trailer lighting control. Module "copies" car light signals to socket of the trailer. Module WH1 is for 7-pin trailer socket.


WH1-PRO-G7 kit is the most budget friendly set that includes complete wire harnesses, socket and accessories. This set is designed for "lightweight" trailers (without REV light). The cable length is sufficient for a "typical" installation.

WH1x modules work correctly with lamps based on filament bulb or on LED in car. Additionaly, it works with PWM steering of lamps in car (when by one wire are controlled two lights - eg. "brake lights" and "tail light").



NOTE: Please remember, that socket G7 not include circuit for REV light. For example in Poland it can be used only with "lightweight trailer" (gross trailer mass up to 750kg).

Product requires to be installed by specialized workshop - read here.

  • Product's EAN code: 5907662621145
Kit contents
  • Main control unit 1 pc
  • Integrated wire harness (all-in-1-plug) 1 pc
  • Socket G7 1 pc
  • Mounting set 1 set
  • Screw set 1 set
  • Connections diagram 1 pc
Module main features
Current load inputs
≤2 mA
LED lights and single filament bulbs support (car)
Working with cars which use pulse width modulation (PWM) for powering lamps
LED lights and filament bulbs support(trailer)
Ability to control of park sensors module in car
Trailer reverse light control
Car rear fog-lights control modes
Trailer fog lights control modes
Trailer fog light sequential(independent) control
Features of electric cable harness
Length of power harness
5,0 m
Length of cable harness to the socket
1,7 m
Length of input signals cable harness
L=1,0 R=3,0 m
Technical data
Power supply voltage
10-18 V
Position lights output power, max
(each of sides) 3 x 5 W
Stop lights output power, max
3 x 21 W
Turn signal output power, max
(each of sides) 21+10 W
Fog-light output power, max
21 W
Kit equipment
Complete bundle of towbar with installation accessories