Tail light problem

Hi Terry,
I would start with trailer plug and see if wires are still all ok and also check for dirt or mud.
Hope this helps.
David

If you can use a multimeter, start by checking each tail light assembly in continuity mode.
(active wire to earth). This will identify which one (if any) has a dead short in it.

Failing that, an auto electrician is your best bet.

As David said it is most likely the trailer 7 pin base or if it only happens when the trailer is plugged in then look at the trailer plug too.

It is common for a small stray strand of wire inside the base/plug to join to the earth wire.

If the vehicle has hit something the cable to the plug may have been squashed and that may short the wires and blow fuses. Look for damaged cables as well as checking inside the plugs.

The brown wire should have no contact with anything other than pin 7 in both the base and plug.
If any recent work was performed on the vehicle make sure the worker hasn't caught the wiring, damaged it and shorted it to earth.

Ross M

Terry,
All of the above plus look for any previous changes to the wiring. I had a similar problem in my Troopy and it was caused by a wire that had been added by just cutting, twisting and then taping up. After time the tape had gone hard and lost its stick leaving the bare join to rub against the body whenever I went over a bump. Mr Murphy made sure it was in the last place I looked having accessed just about everywhere there were wires !!

Frustrating but if you are patient and thorough you will find it. Most things have simple causes.

cheers

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