Modules WH1 series are basic controllers for trailer lights steering. They operates in a simple way - by copying 1:1 signals from rear of car to the trailer. They can be used with light cargo trailers (when 7-pins socket) or (with 13-pins socket) with among others bike rack (where is required REV light) or in general cargo trailers.

WH1-PRO-G7
WH1 module is essential product for trailer lighting control with 7-pin trailer socket. WH1-PRO-G7 kit is the most budget friendly set that includes complete wire harnesses, socket and accessories.
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
WH1R-G8
WH1R module is a basic controller for trailer lights steering (including REV light). Kit contains complete cable harness, trailer socket G13 (with 8 pins active to trailers lamp) and accessories. Module properly operates cars where lamp is controlled by PWM.
standard system - for typical passenger cars suitable to the 13-pin plug of the trailer (used 8-pins) trailer reverse lights control 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
WH1R-G8-RAV4
WH1R module is a basic controller for trailer lights steering (including REV light). Kit contains complete cable harness, trailer socket G13 (with 8 pins active to trailers lamp) and accessories. This set is dedicated for Toyota RAV4 (gen.5 2019>), Highlander (gen.4 2020>) and Suzuki Across (2020>). It use factory socket in car for connection cable harness. For this reson installation pedriod is simpler and faster.
standard system - for typical passenger cars suitable to the 13-pin plug of the trailer (used 8-pins) using of factory connector in car trailer reverse lights control 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