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ByPass Relay ByPass Relay - £27.99

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Suitable for CAN bus Vehicles

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 carís 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 carís battery.