Headlights not working properly

Tiny
UNCLE GUMBYT
  • MEMBER
  • 1995 JAGUAR XJS
  • 4.0L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 117,000 MILES
Headlights come on when the ignition switch is off. Sometimes you can turn ignition switch on and hit the dimmer switch on to bright and the lights will go off other times when the lights come with switch off the bright light indicator lights up. Sometimes the lights will come on and go off by themselves.
Do you
have the same problem?
Yes
No
Wednesday, August 26th, 2020 AT 1:15 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi,

I have to be honest. It sounds like the switch may be bad. I need to know if you have daytime running lights or not to select the correct wiring schematic. I have already looked through both and there are differences with relays and so on.

Let me know.

Joe
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Wednesday, August 26th, 2020 AT 2:21 PM
Tiny
UNCLE GUMBYT
  • MEMBER
No I don't have daytime running lights, but I do have an alternator going bad. Could that be part of the problem? Rich
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Friday, August 28th, 2020 AT 4:27 AM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi,

I have to be honest, low voltage can cause a lot of strange things to happen. Have you checked the alternator to see if it is providing enough voltage? Here is a link that shows how it's done:

https://www.2carpros.com/articles/how-to-check-a-car-alternator

It sounds more like a switch issue, but confirm the alternator is still doing enough.

Let me know.

Joe
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Friday, August 28th, 2020 AT 3:31 PM

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