Series of universal modules for basic/simple use (when enought simple "copy lights" from car to the trailer) but also with advanced functionality ("buil-in logic", signalling some of status/malfunction, output for PDC steering).
It's characterised by legible connections of wires to the module (separate sockets for each group of wires) and easy to install (already connected socket with main harness).

There are available kits with all sockets - G7, G13-8 and G13.

WH3L-G7
Module with basic functionality (WH3L) with 7-pin's socket (G7). Kit contains all accessories for connection of module to the car's electric system - and socket G7 already is connected with main harness which makes an installation shorter.
suitable to the 7-pin plug of the trailer working with LED and bulb lamps and PWM steering working with LED and bulb lamps on the trailer recognition of PWM steering of car lamps (analogue method) directly steering of fog-light of trailer
WH3L-G13-8
Module with basic functionality (WH3L) with 8 wires in 13-pin's socket (G13-8). Kit contains all accessories for connection of module to the car's electric system - and socket G13-8 already is connected with main harness which makes an installation shorter.
suitable to the 13-pin plug of the trailer (used 8-pins) control of reverse light of the trailer working with LED and bulb lamps and PWM steering working with LED and bulb lamps on the trailer recognition of PWM steering of car lamps (analogue method) directly steering of fog-light of trailer
WH3L-G13
Module with basic functionality (WH3L) with 13-pin socket (G13). Kit contains all accessories for connection of module to the car's electric system - and socket G13 already is connected with main harness which makes an installation shorter.
suitable to the 13-pin plug of the trailer control of reverse light of the trailer working with LED and bulb lamps and PWM steering working with LED and bulb lamps on the trailer recognition of PWM steering of car lamps (analogue method) directly steering of fog-light of trailer include separately circuit for trailer battery charging supply voltage (+12V) is permanently brought out in the socket
WH3S-G7
Module with standard functionality (WH3S) with 7-pin's socket (G7). Kit contains all accessories for connection of module to the car's electric system - and socket G7 already is connected with main harness which makes an installation shorter.
suitable to the 7-pin plug of the trailer working with LED and bulb lamps and PWM steering working with LED and bulb lamps on the trailer recognition of PWM steering of car lamps (digital method) acoustic signalling of switching-on fog light on the trailer  sequential on/off fog lamp acoustic signalling of recognition the connection and disconnection of trailer detecting and acoustic signalling of damaged directions lights on the trailer socket for connection of tri-colour LED indicator output for enabling of switching off PDC signalization in car OPTION: additionally variants of stitching off PDC signalling using separatelly PDC-OFF modules
WH3S-G13-8
Module with standard functionality (WH3S) with 8 wires in 13-pin's socket (G13-8). Kit contains all accessories for connection of module to the car's electric system - and socket G13-8 already is connected with main harness which makes an installation shorter.
suitable to the 13-pin plug of the trailer (used 8-pins) control of reverse light of the trailer working with LED and bulb lamps and PWM steering working with LED and bulb lamps on the trailer recognition of PWM steering of car lamps (digital method) acoustic signalling of switching-on fog light on the trailer  sequential on/off fog lamp acoustic signalling of recognition the connection and disconnection of trailer detecting and acoustic signalling of damaged directions lights on the trailer socket for connection of tri-colour LED indicator output for enabling of switching off PDC signalization in car OPTION: additionally variants of stitching off PDC signalling using separatelly PDC-OFF modules
WH3S-G13
Module with standard functionality (WH3S) with 13-pin socket (G13). Kit contains all accessories for connection of module to the car's electric system - and socket G13 already is connected with main harness which makes an installation shorter.
suitable to the 13-pin plug of the trailer control of reverse light of the trailer working with LED and bulb lamps and PWM steering working with LED and bulb lamps on the trailer recognition of PWM steering of car lamps (digital method) acoustic signalling of switching-on fog light on the trailer  sequential on/off fog lamp acoustic signalling of recognition the connection and disconnection of trailer detecting and acoustic signalling of damaged directions lights on the trailer socket for connection of tri-colour LED indicator output for enabling of switching off PDC signalization in car OPTION: additionally variants of stitching off PDC signalling using separatelly PDC-OFF modules include separately circuit for trailer battery charging supply voltage (+12V) is permanently brought out in the socket