trailer lights issue

[peatff]

Get somebody to press the brake pedal with the offending indicator on while you look at the lights (with the engine running or ignition on of course) Mine had a problem where the indicator would not work but when you pressed the brake the rear light flashed instead. I cleaned the earths up and the terminals in the lamp unit on the car and it cured it.

[dig-dug-dan]

What you will have on the truck is a clever box of tricks with relays in which is designed to " hide" the trailer lights from the vehicles system. Sometimes you ahve an audible buzzer of flasher that tells you the indicators are working correctly on the trailer, its a legal thing.

I have neither on my cabstar, but if the indicators do not work on the trailer, they flash twice as fast on the truck, as any vehicle would if a bulb has blown.

if you have plugged two different trailers in,, and the truck indicators fail each time, then your problem will be with the box of tricks which you will need to trace by following the wiring loom from the trailer socket.

to the guy who fitted his own towbar, be wary as you will need to tell your insurance company you have fitted it yourself and that its not " type Approved"

[Badgerland]

Thanks for all the suggestions chaps. Just thought I'd give an update.

 

Spoke to a fella today in the know who suggested that as it was a factory fitted light socket that it was most likely down to a fuse. Not one in the main fuse box but a separate one coming straight off the battery.

 

Didn't even know of such a fuse, but low and behold there it was where he suggested. Quick replacement and all is now working perfectly.

[woody paul]

Thanks for all the suggestions chaps. Just thought I'd give an update.

 

Spoke to a fella today in the know who suggested that as it was a factory fitted light socket that it was most likely down to a fuse. Not one in the main fuse box but a separate one coming straight off the battery.

 

Didn't even know of such a fuse, but low and behold there it was where he suggested. Quick replacement and all is now working perfectly.

 

But why did it blow, replacing fuse may only be a short time fix.