I was going to say an earthing problem also.

The lights earth back through each other, hence they all flash.

-- Edited by Kiwi-as on Tuesday 8th of May 2012 07:47:22 PM

Maybe its not a fault. might be a warning. eg. Is it just the side you have put the blinkers on or is it the whole caravan all over. I know I'm not much help but that was my thought as I read your post.

Mate. that is definitly an earth return problem. When this happens the system tryes to creat an earth back through the positive side of the lights causing them to show a dull glow.

Some cheap skates try to use the tow ball as an earth instead of wiring a circuit & this is the result. Firstly check that there is an earth circuit to both sides of the car/van plugs, if this is in place then the problem can still be either the car side of the system &/or the van side.You will also find that all other lights maybe a bit on the dull side as well.

The problem will be a loose/dirty/coroded/broken wire in the system. possibily at a junction section, this is where all the earth return wires from all lights join onto the main wiring loom from the connection plug at the towbar.

Just to prove the point remove a lens from a indercater light, connect a small jump lead (length of wire with aligator clips attached) to the earth terminal of the indicaterlight & the other end to a clean section of the chassis, the lights should work ok. This is just a test system.

Its a matter of starting at one end & working your way through,some times a simple movement of wiring can change from complete failure of lights to a normal function & thats where you problem will be.

Happy hunting!

JC.

jay jay
have any globes been changed lately it is possible you may have put a double contact globe in a single contact socket
brian

JayJay;

         I waited to see what others may say , I thought 'earth' too .

But , you said "all" the 'caravan external' lights . Is that ALL the lights ,

or th 'vehicle lights' , vehicle lights , I mean by , brakes , clearence ,

blinkers . Not the outside lights on th van , not having had a van I don't

know too much about them . But with your vehicle , wy not try another

vehicle , if it still does it , it is in th van . That 'diagram of pins' from

Jim Richo , would be handy to print out & keep for future ref . I would

still check both of your pins , then YOU know that they are ok .

Hope you get it sorted out & cheaply .

Richo.

Hi JayJay. Your problem will definatly be an earthing error. On a lot of vans the earth from the trailer plug is only a short run then connected somewhere on the drawbar and the van chassis used as an earth for all lights etc. What I have usually found is that this problem comes from the mounting screws of a light becoming rusty/coroded and then it all feeds back through the + feed of another light. As mentioned earlier fitting the wrong globe can also cause this but is not that common. Does it happen on one indicator or on both sides? If its only 1 check earth and mounting screws on that light first. Hope this helps