Towing Relays | Smart CANbus Modules | Bypass Relays | Details
Trouble-free fitting
These devices allow trouble-free fitting on vehicles with complex electrics and electronics. They are designed to operate trailer road lamps in unison with the towing vehicle's road lamps without drawing any significant current from the vehicle's road lamp circuits. They are used in vehicles that have bulb-failure warning devices that would be activated by the simple connection of additional lamp circuits for the trailer directly to the vehicle's own lamp circuits.
Not detected
Smart Bypass relays incorporate miniature relays to switch the trailer lamps on and off. Connection is made to the vehicle's lamp circuits but only for the purpose of alerting control circuits that energise the coils of the relays. So little current is taken from the vehicle's lighting circuits that the vehicle cannot detect it.
Power direct from the vehicle's main power source
The current that energises the coils of the relays as well as the current that the relays switch to the trailer is all drawn from the vehicle's main power source (fuse bus, etc). The current taken from the vehicle's wiring circuits is less than one milliamp per circuit. The quiescent current (current when the vehicle is powered down) is measured in micro amps.)
Easily handle currents
Although the coil currents are tiny, the switching capacity of each relay is 20 amps. This means they can easily handle the currents found in typical trailer/caravan road light systems.
See Smart Bypass for full range of relays and fitting details.