'68 AMX turn signals

Have a strange problem.

Sounds like a gfround.
If you put the parking lights on, does the brightness match on both sides? They share the same ground.

Looking at my 1970 AMX schematic, all the head and marker lights are linked to the same commom ground, all using a black wire, all to the same body ground (Actually 2 wires, one from the left lights, one from the right). The parking lights show that they are grounded through their housings. The tail and back-up lights are also all shown to ground at their respective housings. The rear side marker lights are grounded together somewhere to the body. Since I've got the electrical system of mine splayed open, I may be able to tell you where the somewheres are in a day or so.

Finally fixed the problem.  It was the ground on the passenger side parking light housing.  Just ran an individual ground from the radiator surround to the light housing and everything works fine.

jdaechsel,

I had a similar problem with the back-up lights once. It turned out the feed wire on one of the bulb sockets had broken off. The bare end was resting against the body of the socket (i.e. ground).  Would never have noticed except that fuse also powers the radio. Put car in reverse - radio shuts off - fuse blown - change fuse - repeat sequence - WTF???

So check your wiring at all the sockets. There is a short in the wiring somewhere after the turn signal switch. Does a fuse blow when you step on the brakes? If not, it's more likely associated with the front turn signals.

Did you change a bulb recently - like just before this started happening? Check that bulb carefully. Could be defective, could be the wrong bulb causing a short in the socket.