Trailer towing bulb failure bypass relay 12/24v

Towing bypass relays are used when the vehicle won't support a trailer lighting circuit being added. If your car truck or motorbike has a bulb failure system that won't allow a towing wiring circuit to be added, this relay team I'll bypass the cars monitoring circuitry and allow a towing circuit to be added. We have available for 12v or 24v vehicles (see our other listings for 24v versions ) Most modern vehicles have a computer controlled canbus type system, and this top quality towing relay allows a trailer plug to be added without interfering with the car, motorhome or truck existing wiring.

We also offer 24v to 24 or 12v relays, to allow any 24v vehicle, eg camper, horse truck, commercial truck that operates a 24v wiring system, to have a 12v towing circuit plug added, to allow it to tow a conventional light 12v trailer, see our other listings for details.

See below the manufacturers explanation of a towing bypass relay:

Bypass Relays

Bypass relays are used where the cars own lamp circuits cannot support their shadow circuits on the trailer or caravan. This may be because the circuit may not be rated to take the extra load of the trailer, or because the cars own bulb failure monitoring system might become confused with the extra load from the trailer lamps. In their simplest form, bypass relays operate by taking a signal current from the car’s lamp circuit, which then switches a relay and with it current to the equivalent circuit on the trailer from a supply derived directly from the car’s battery.

Collect from Tauranga, or will post nationwide. GST is included and an invoice will be provided on request. We provide wiring diagrams and a technical support telephone number should you require it.