Question about Pontiac Bonneville

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Electrical short circuit

Created a short while installing a aftermarket radio. now my dash lights and break lights dont work. my headlight switch will no longer control my headlights. any ideas?

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  • javier a
    javier a Mar 24, 2014

    its not hookd to a cont power source. It just shorted out somewhere and I cant seem to figure it out. Theres either a relay melted somewhere or something. Maby even part of a fuse pannel is melted. I dnt thnk it would be melted though as I noticed right away when the short happend. Seems like it should just be as simple as replacing something somewhere but I dont k.ow what

  • Stuart Dawson Mar 24, 2014

    What year is your vehicle please?

  • javier a
    javier a Mar 24, 2014

    98 ssei



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  • 138 Answers

Check your fuses, shorts blow them.

Posted on Mar 23, 2014

Testimonial: "yeah i did that, i also replaced the sentinel a while ago and it didnt seem to solve anything. i unhook the radio and change the fuse and everything seems to work, but everything stays on after i shut the car off. where could this problem possibly be?"

  • 2 more comments 
  • Stuart Dawson Mar 24, 2014

    Sounds like you have the unit hooked up to a continuious power source. Find an ignition controled power source. original sterio power, cigerete lighter, anything on your ignition accessory power circute.

  • Stuart Dawson Mar 24, 2014

    It is not a good idea to have your radio hooked up to a continuious power circuit.

  • Stuart Dawson Mar 24, 2014

    What year is your vehicle?

  • Stuart Dawson Mar 25, 2014

    Check your wiring on the radio, only way I can see that it would stay on all the time is if you mixed up the Orange (hot at all times) and the Yellow(Hot on Acc or run) wires.



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I have a 2004 Nissan Maxima and my tail lights dont work and whn my headlights are on the dash dimmer doesnt work and a section up by the radio lights dont work. I checked my fuses and the headlight fuse...

find the short, could be in the switch or a wire itself...and if you have a bulb out it complicates finding it even morenew fuse it, then turn things back on one at a time...should tell u where the problem is

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After haveing a aftermarket radio installed, the low beam headlights and the brake lights dont work. The high beam lights will work if the high beam switch lever is held on.

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No need to say you obviously created a short circuit when you installed the radio and something got fried.
Could be the dimmer, you could try to bypass that but in all honestly I think it is best left up to a pro.

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you need a head light switch. buy from carquest (significantly less expensive then dealership).
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Terry: It's obvious I'm not dealing with a USA spec car, however, I had lived in the U.S. Virgin Islands and am quite familiar with the Bluebirds of the past. Nissan still uses the same basic circuitry designs as far as what circuits serve what. Here are the circuits to look at.
All lights which are switched on by the headlight switch. This includes the Cigarette lighter back light, radio light power supply, automatics have shifter back lighting as well as your climate controls and all dash lights. Your side marker lights are also served by this circuit. The dash lights go through a type of dimmer switch which essentially creates resistance, thus dimming the lights. Sometimes the clocks are tied into the circuits. Start with the simple things first and work your way in. There is a type of fuse called a circuit breaker which will plug into the fuse block in place of the fuse.
Get the same rating as the one you pulled out. DO NOT USE A JUMPER WIRE AND LET THE SMOKE OUT OF THE WIRES!
If the circuit breaker blows immediately, you have a serious short!
With the circuit breaker, if the short is not real bad, the lights will burn for a little bit before the breaker blows. Once it cools, it will close and the circuit will operate again. While it is in operation, you look for the lights that operate and the ones that don't. Check the ones that don't. Although it's rare for a bulb to cause a fuse to blow, it does happen.
I often find problems are due to radio installations or other types of installations. So if you don't have a factory radio or if you have some type of accessory which has been installed in the console or dash, this would be a prime suspect. Nissan's are not really known for electrical problems unless they have been in collisions. If your car has been in a collision, look in the area where it was hit. You may find a pinched wire or damaged insulation. I am not quite sure what model your car would compare to in reference to a US car.
The Bluebird's were 510's. Are the Maxima's now? What ever model it is, unless it has no sister model imported to the
USA, the odds are that the circuits are going to be real close if not identical! I hope I have been of some assistance. Let me know.

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It certainly sounds like its a short in the switch or a problem in the loom that is shorting out the dash and radio ancillarys circuit.

Its not good news but for sure the right place to start is the switch I am affriad. could you get a separate switch unit to swap out and test ?

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