Electrical failure - Rear lights.

[Trolkar]

Well, my problems with my Espace never seems to end!
Now the rear lights are starting to have a party, and flashing all the time.
It seems like a "normal earth" problem. – When using the signal indicator, the brake lights is flashing, and with normal lights on, the brake lights is also slowing a bit light. – It is the same in both sides.

The lamp seems pretty okay, but the "earth" pin is very black, and the surrounding plastic has melted. – But that's to fixed, but think is that difficult.

The tricky part is, that the problem is not really in the lamp or the connection. When I check the wires, BEFORE the connection to the lamp, the problems is the same. A small amount of voltage (1-3 volt) is measured to the brake light. My question is therefore – Where to start finding the error?

The vehicle is equip with a tow bar. – Where are the wires to the tow bar connected to rest of the car? – Perhaps I can find the problems there? – Any ideas are welcome!

[renaultbiler]

This a "normal" fault, best is to take a new earth cable from chassis and solder to the lamp on both sides.

[Trolkar]

This a "normal" fault, best is to take a new earth cable from chassis and solder to the lamp on both sides.

Arhg... Don't like the "This a "normal" fault"... 
Any ideas / pictures of points to solder on the lamp, and mainly - Where do I find a nice clean earth on the chassis?

[Sommerby]

In my car the towbar plugs are connected to each rear light and then the existing wireing is again connected to the towbar plugs. When I installed it nothing was working and I then read the manual :-) .  When the car is with canbus (From year 2000 onward i believe) I needed to install an additional relay in order to get it all working. I placed the relay in the room where you have the jacklift and the key for the the wheel bolts, so you may find such a relay at the same location or in the other side where the CD disk module is located in case that you need to troubleshoot the relay?
Best regards
Bo

[Trolkar]

This a "normal" fault, best is to take a new earth cable from chassis and solder to the lamp on both sides.

Hi Renaultbiler!

Thanks! - That was the solution! - But now, when towing a trailer, the blinker flashes rapidly?!? (Also on the trailer)
The trailer works fine with other cars, and the connections has been solded in the "trailer towbar connection"

http://188.183.6.22/Troels/Lamp1.jpg
http://188.183.6.22/Troels/Lamp2.jpg