Front turn signals and parking lights don't work. The wiring harness coming out of the steering column has a purple and light blue wire. When testing them using a proper ground, both work properly.
Up front where the wire goes down to the turn signal, you have to turn the ground around to a power source and then ground out against the purple wire or the light blue wire with the and then they work fine.
I am an idiot when it comes to wiring. Any help greatly appreciated.
Sounds like you have the wrong bulb in the socket.
The bulb grounds through the socket and mounting bracket to the body of the car. The brown wire is the +12 Volts from the headlight switch and the purple wire is the +12Volt input from the flasher/blinker circuit. There is no ground wire on the front parking lights.
Do you have all your chassis grounding staps installed? There should be one from the firewall to each valve cover, and one directly from the fender to the negative battery terminal, as well as a couple from the front subframe to the firewall.
I would agree a RS turn signal is grounded by the bracket in the valance, but there is also a ground wire.
On a 67 RS front turn signal there is a ground wire (white?)that is screwed into the inner fender with a hex head screw and serated washer that is about 3/4" from the penetration for the grommet. The ground wire doesn't go through the grommet or share the plastic connector.
On a 67 non-RS there is a black ground wire that gets screwed to the inner surface of the headlight bracket.
[This message has been edited by bonecrusher67conv (edited 04-26-2002).]
I had a problem with one of my turn signals where there was some corrosion between the bulb mounting (the part with the groove to hold the bulb in after pushing and turning)and the housing. I had variable resistance to ground. I gave it a gentle smack with a hammer and it started working again. i had to do a little filing to get the bulb to fit again, but filing is free.