Gold Lifetime Member
Join Date: May 2012
Location: Trumbull CT USA
Re: Courtesy lights
For a very basic description, your Courtesy Lights are a combination of the 20 Gauge/ Orange (12Volt supply) and 20 Gauge/ White Common Ground (If I can call it that ?)
When you Turn your Headlight Switch Knob to Turn On the Courtesy Lights or Open a Door, The White Circuit completes the Current path to Ground and All the Courtesy Lights Illuminate.
Somewhere on the White Side of that Circuit it is going to Ground - Your Headlight Switch, Door Switch or a White Wire is Completing the Circuit (A Short).
There is a Courtesy Fuse - pop that one out, and your Lights should go out,
Put it Back In.
Pull each Door Switch 1 at a Time, The Drivers Door Switch has 2 Wires to it.
If Lights are still on, Than I would Disconnect the Headlight Switch.
If Still on, you have a Short somewhere in the Wiring Harness.
On my Harness, the Orange to the Drivers Switch was Melted.
1969 SS/RS Coupe 427BB 700R4 12 Bolt 4:11 A/C, High School Resto Mod
November 1968 Build Date