Supra Wiring/Fuse Problems Need Help!!!

roadtalontsi · 10-19-2005, 12:43 AM

yes you have a short circuit (to ground). either a wire or a connector cut or something to make contact with ground (chassis or negative) or a motor (the load for the circuit) doesn't have enough resistance. Either way theres not enough resistance in the circuit to keep the current below what its fused for. Whatever you do dont just put a bigger fuse in. The factory already has a 30% lee-way just incase of spikes. Basically your going to need a voltmeter at the least to tackle this one, the only problem is that you need to know how to use it. Im going to take a wild guess and say its probabably window switch related. but thats just because i know window switches fail quite often on other vehicles.

Sorry for the essay. If you can get a wiring diagram or manual i can probably help you further.

Kristamarie · 10-19-2005, 12:01 PM

Thanks for your suggestion. I do have an ohm/voltmeter and the diagram is somewhere in the basement, just need to look for it. ghettie had the same problem and I was hoping he finally figured it out and posted something to the web. I am not looking forward to isolating all the circuits to locate the problem, but I will start with the windows. I am bought the car over two years ago and i am hoping that the previous owner didn't change any of the wiring, so the schematics will be exact. I appreciate your help.

If anyone else has any ideas, I appreciate all of your input.

Kristamarie · 10-24-2005, 11:45 AM

Can anyone tell me what is fed by the yellow Gauge(15) fuse wire in the connector? I traced the short to that wire and removed it from the connector, but the diagrams I have don't tell me where it feeds to. I now have windows and the fan blower works, but no back up lights, rear defogger, gauges or heat.

10-19-2005, 12:43 AM	#1
roadtalontsi Stock Join Date: Oct 2005 Posts: 2	yes you have a short circuit (to ground). either a wire or a connector cut or something to make contact with ground (chassis or negative) or a motor (the load for the circuit) doesn't have enough resistance. Either way theres not enough resistance in the circuit to keep the current below what its fused for. Whatever you do dont just put a bigger fuse in. The factory already has a 30% lee-way just incase of spikes. Basically your going to need a voltmeter at the least to tackle this one, the only problem is that you need to know how to use it. Im going to take a wild guess and say its probabably window switch related. but thats just because i know window switches fail quite often on other vehicles. Sorry for the essay. If you can get a wiring diagram or manual i can probably help you further. Last edited by roadtalontsi; 10-19-2005 at 12:47 AM.

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10-19-2005, 12:01 PM	#2
Kristamarie Stock Join Date: Oct 2005 Location: Saginaw, Michigan Posts: 10	Thanks for your suggestion. I do have an ohm/voltmeter and the diagram is somewhere in the basement, just need to look for it. ghettie had the same problem and I was hoping he finally figured it out and posted something to the web. I am not looking forward to isolating all the circuits to locate the problem, but I will start with the windows. I am bought the car over two years ago and i am hoping that the previous owner didn't change any of the wiring, so the schematics will be exact. I appreciate your help. If anyone else has any ideas, I appreciate all of your input.

10-24-2005, 11:45 AM	#3
Kristamarie Stock Join Date: Oct 2005 Location: Saginaw, Michigan Posts: 10	Can anyone tell me what is fed by the yellow Gauge(15) fuse wire in the connector? I traced the short to that wire and removed it from the connector, but the diagrams I have don't tell me where it feeds to. I now have windows and the fan blower works, but no back up lights, rear defogger, gauges or heat.