twilight sentinal problem?

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The Classic Cadillac Forum Discussion, twilight sentinal problem? in Past Cadillac Vehicle Discussion; Like I've said before I had the car repainted,and I noticed the twilight sentinal doesnt go off in a short ...
  1. #1
    SWEENDOG1969 is offline Cadillac Owners Member
    Automobile(s): 90k 1969 Cadillac Hardtop Sedan Deville
    Join Date
    May 2005

    Questiontwilight sentinal problem?

    Like I've said before I had the car repainted,and I noticed the twilight sentinal doesnt go off in a short amount of time or at all (stand watching the car for 10min then I turn it off) what tells it to turn off? How can I test if whatever it is works? It turns on and off with the switch and has high and low beams. It also turns on with the twilight sentinal. Also I usually have it set for the minimum setting if that matters.

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  3. #2
    77CDV's Avatar
    77CDV is offline Cadillac Owners 10000+ Posts
    Automobile(s): 77 CDV, 06 DTS III, 69 FWB
    Join Date
    Mar 2006
    Newbury Park, CA

    Re: twilight sentinal problem?

    The timer module is dead. It's up under the dash near the light switch. There's a section in the service manual that details how to check it. It can be rebuilt for a price. If you elect to replace it, you must replace the timer and photocell together, as they are a matched set.

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