Cadillac & LaSalle Club Discussion Forum

Cadillac & LaSalle Club Forums => Technical / Authenticity => Topic started by: Morgan Murphy on May 05, 2023, 03:40:21 PM

Title: 1966 Headlight Phantom
Post by: Morgan Murphy on May 05, 2023, 03:40:21 PM
Hey folks, I need some advice on my 1966 Fleetwood 60S headlights.  Here are the facts and just the facts:

1.  The headlights (all four) stopped working a few months after I had the car repainted.
2.  The car is equipped with Guidematic but not Sentinel
3.  I have tested the headlight switch and it is fine.
4.  The dash wiring seems good
5.  The headlights themselves work
6.  The relay for the Guidematic gets very hot
7.  The tail and parking lights work properly, as do all interior lights
8.  The turn signals work correct with the lights OFF, but the starboard indicator gets weird if the headlights are on.
9.  Shortly before the headlights stopped working, I had them on and the right turn signal going.  It was doing its weird thing but stopped when I put a hand on the fender near the light.

This leads me to think the relay or high beam foot switch has shorted out, but the culprit might be a bad ground on the fender.  Any other thoughts?

Morgan
Title: Re: 1966 Headlight Phantom
Post by: V63 on May 05, 2023, 04:27:35 PM
The floor dipper is problematic and also controls guidmatic
Title: Re: 1966 Headlight Phantom
Post by: Morgan Murphy on May 08, 2023, 10:12:54 AM
Thrilling conclusion: the switch was fine. The floor switch was fine.  Some genius (ahem, me) drilled a screw through the headlight harness running near the radiator while installing the windshield washer refill bottle.  Whoops.