Question about 1991 Isuzu Pickup

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Fuse blows when parking lights are on

When i turn on either parking lights or headlights the fuse blows but the headlights stay on whats might cuase that problem.

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Check the fuses connection to the slot in wich it goes. you will need to take the fuse box off and look at it from the back. hopefully it helps.

Posted on Dec 04, 2008

  • Anna Apr 20, 2013

    Where's the headlight relay located?

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Left of the two headlight buttons for headlights and parking, there is a vertical slider. It's labeled Twilight, meaning twilight sentinel that keeps the headlights on. Move it down and that shortens the on time to about 5 seconds. If you are sittting with the headlights on and want them to go off, push it to the bottom and it turns the lights off immediately. They will turn back on when the car is put into park.

Move the slider to the top and they should stay on for about 5 minutes. BTW if you just leave the headlight switch pushed in (if you're doing it manually) the car turns everything off in about 10 minutes--inside lights, radio, lights, cigarette lighter power (unless you moved the fuse in the underhood fuse block to make them stay on permanently).

You also may not know that if you are driving or sitting and want the headlights off but the parking lights to stay on, push the Parking LIghts button. That turns the headlights off. I didn't find that for a while because our 98 LeSabre didn't have any way to turn off the headlights while cruising through a Christmas display scene in a park where many people turn off the headlights to help the effect of the colored lights. Please Rate My Response! Thanks!
//

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1 Answer

Blowing fuse


hi take the fuse out replace with a temparary test light turn your headlights on if there is a short the light will light up so what you need to do now is disconnect the headlights one at a time until test light goes out when testlight goes out you know this is the faulty headlight if the test light stays on disconnect lightswitch connecter see if testlight goes out if so replace switch if it stays on find headlight relay remove it see if test light stays on if it does then there is a short in the wiring which is very rare yates210456

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I am not much of a mechanic any more ,but I do have some experince with electronics and for any circuit to operate battery has to flow to ground.Direct battery to ground will blow a fuse or melt your wiring if the fuse does not blow.If your parking lights stay on all the time then there is a complete path from battery to grd through the lights,and it sounds as though what ever is causing the problem on the parking lights is killing the path to your lamps relay.A wiring diagram may be available on the internt or library.Good luck.

tk46

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