Trailer auxiliary socket – circuit operation

TRAILER AUXILIARY SOCKET – CIRCUIT OPERATION

CIRCUIT OPERATION

Accommodation within the system has been made for the addition of a trailer lighting system to consist of 2 side lamps, 2 fog lamps, 2 reverse lamps, 2 brake lamps, 1 LH indicator and 1 RH indicator. In addition to these loads, there is also a provision for a 10 amp battery feed to the trailer.

Bulb Failure Diagnosis With Trailer

The diagnosis of external bulb failures will be modified by the presence of a trailer as follows:

Brake lamps

Diagnosis of the RH vehicle and trailer lamps will
only detect a failure of all the filaments. Diagnosis of the LH vehicle brake light is unaf
fected.

Rear side lamps

Diagnosis of the LH rear side lamps will only de
tect the failure of both the vehicle filament and the trailer filament. Diagnosis of the RH rear side lamps will only de
tect the failure of both the vehicle filament and the trailer filament.

Reverse lamps

Diagnosis of the RH vehicle reverse light and the
LH and RH trailer reverse lamps will only detect failure of all of the filaments. Diagnosis of the LH vehicle reverse light is unaf
fected.

Fog lamps

Diagnosis of the RH vehicle rear fog light and the
LH and RH trailer fog lamps will only detect failure of all of the filaments. Diagnosis of the LH vehicle rear fog light is unaf
fected.