67 SS/RS, under dash wire question

[67jeffreyt]

So I'm under my dash and this heavily taped wire is there, so I unwrap it and it looks like a diode, or resistor in the shape of a round ball, soldered to a brown wire. It looks like it goes up to ignition switch and the other side pairs up to a blue wire in a plug that goes to the firewall. I don't have a clue and it's hard soldered in. Sorry for the size of pic my phone won't resize any smaller.

[67jeffreyt]

This is the paired up pic

[Mike S]

 I'll look at my 67. That looks like a diode as a resistor will not be a ball shape
It's easy enough to verify it is a diode with a DVM.
When you said the blue wire goes to the firewall, how does it contact it? Through a plug?

Mike

[67jeffreyt]

I honestly can't tell how it goes through the firewall it looks like it goes behind the fuse block,. I think it's my headlight wiring, but this is my first 67 Rallysport, and I'm unfamiliar with it as of the moment

[169INDY]

1967 Camaro RS headlamp Doors
Page #13 of the Jim Osborn Reproductions INC
MP50
1967-69 CAMARO RS
Console Gauge & headlamp wiring diagram manual

Page 13

Item 3. A One-Way diode in the ignition switch door relay actuating circuit, limits current flow to one direction.

Page 14
Diagram Camaro Headlamp Door wiring- System in "CLOSED" position.
Diode is in series with the brown wire that goes to the Relay #2 closing coil.

See if the manual is still available.
http://www.osborn-reproduction.com/

[67jeffreyt]

Awesome Information, thank you.