I have a 1977 Cadillac Eldorado base model. I've been having trouble with the foot switch for the bright lights, when I press it the brights come on but when I release it they go back off. I want to replace the switch but I don't know if my Eldorado has the Guidematic control. How can I tell if my Eldorado has Guidematic?
In the headlight switch if is back labeled with :
1) "LIGHTS" this car has no light options)
2) LIGHTS and SENTINEL (this car has automatic
dusk/dawn headlights.
3) SENTINEL and DIMMING (this car also has automatic dimming)
4) LIGHTS AND DIMMING (this car has automatic dimming)
G'day Richard,
You have an email from the Moderators that requires your attention.
Thanks,
Bruce. >:D
also refer to the owner's manual on how this system works
If it has automatic dimming, there should be a strange-looking "eyeball" under the hood between the radiator and front grille.
To test if it's a switch issue, you can 1) cover this eyeball with a non-reflective cloth (preferably black) to effectively disable it, or 2) you can turn off the auto dimming system using the headlight switch. If I remember correctly there is a small switch that moves left to right above and behind the pull-out headlight switch. If you turn this small switch all the way to the left you should feel a slight "click". This disables the auto-dimming feature.