Question about 1999 GMC Yukon

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The relay for the taillights and dashlights keeps going bad in my 1993 yukon

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U might want to check the wiring harness of the tail light that it might be making ground inappropriately that could making ur relay going bad.

Posted on May 05, 2010

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WHAT CAUSES THE TAIL LIGHTS AND DASHLIGHTS TO GO OUT ON 1983 TOYOTA TRUCK?


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I have a 1999 saturn sl1 and my tailights and dashlights quit working. i changed the fuse and it blew. so i changed the fuse again and it lasted about three minutes before it blew again. where do i start...


Okay, these are hard to find. I assume you have no problem when you do not have the Tailights on? This would mean problem could run all the way to rear taillights.

But if the problem is not related to putting power through the wires to the taillights it is under the dash area. You would have a short from the power supply to the lightswitch. You have a Relay for the lights in the Powerbox.

Go to Autozone.com Website and register your vehicle for a free wiring diagram and Powerbox layout.

You can then see for yourself about how the dashlights are grouped with the taillights. You could have a bad Relay.

Look at how the taillights get their power and this will show you a color/coded path from the front to rear of your car. As I said earlier, it is important to know if the lights only short when they are turned on by the headlight switch.

If they short out all the time, regardless of the headlight switch being on or off, then the short is more towards the front, between the dash and Relay or the Relay itself.

Use the built-in cutoff points as a way of eliminating the shorted part. The headlight switch is a cutoff point. Power rearward is halted with the except of the Brakelights. If the Brakelights work fine, the bulb sockets are probably grounded properly.

If the fuse pops with the headlamps off, the power is not going rearward and you are okay.

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wire is pinched/short to ground can be aggrevating to find

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My headlights work an brake lights do too but my dashlights parkinglights and taillights dont what is the problem


The dashlights, parking lights and taillights usually are all supplied by the same fuse so check for a blown fuse in the fuse box.

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