Re: tail light fuse keeps blowing on my 1995 geo prism
Took it to the shop. The side marker lights were missing on my son's car. The wiring loops from the side marker lights to the tail lights. As the wires were touching in the front, they shorted out the tail lights. Capped the wires, problem solved!
PS: ordered side marker lights, too.
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if you have just replace a tail light bulb check that it was the right bulb as the problem is a dead short
one bulb type has 2 contacts and the other has 1 contact which if placed in the wrong holder will short out the circuit and blow the fuse
Replacing the wiring is simple IF all upi are replacing is the socket. If you haven't already, check the socket for rust, corrosion, etc. Replace if needed. Check and replace the fuse as well as the turn indicator relay (this is under the dash). To find it, turn on your blinker (left or right) and feel for it (you will feel it clicking-assuming its working ay all, it should be). These get weak, and don't make a "clean" connection and can cause shorts at either end of the vehicle in respect to blinkers, hazards etc. Also, make sure that all other bulbs and sockets are in good repair\condition. If the problem persists, than the problem may be a break in the wiring, but not likely. Check all other fuses as well whole your checking the blinker\tail light fuses(s) and relays.
It sounds like just the one problem. Your tails and the dash illumination lights are all on the one circuit that the fuse keeps blowing. Don't get confused thinking of another main fuse, just focus on this one circuit..
It is very seldom that a short develops at the fuse box, it certainly can happen from corrosion or loose terminals, but it is rare. More likely is a bad wire just like the one you found near the exhaust. Somewhere very likely a wire has had insulation stripped or scraped off, soon as the wire touches metal it will blow the fuse. Were any other wires damaged in that harness for the speed sensor? Or do you see any wires hanging down from under the truck, anywhere going back to the tail lights?
If you did the stereo yourself, were any wires cut going to the dash? I doubt this as the wire for the dash lights would be in a wiring harness that is like a bundle from under the dash up to the instrument cluster. You just have to keep looking for the short.
Check your fuses. Dash lights and tail lights are on the same fuse. Check the fuses electrically, just looking at them is not enough. Replace any blown or damaged fuses with fuses of the same rating, NEVER use a fuse of a higher rating.
If the fuse blows again, you have a short circuit to ground. Check all the front and tail lamps and their wiring and don't forget the trailer connector if you have one fitted..
Are the bulbs out of the sockets and the fuse blows? Take bulbs out and check again Place one back at a time if fuse was OK with bulbs out to locate bad bulb. Otherwise....... Do this........if still needed with bulbs out and fuse blowing. Put a circuit breaker in to replace the fuse of the same amperage. It will trip off then back on. Use a standard cheap magnetic compass........place along lighting wiring........the wire with current will cause the needle to jump as circuit breaker trips on and off. Follow path of current to problem.....the compass will stop moving once past the shorted /grounded wire/connection.
First and foremost you need to find out why the fuse melted,this tells me that something shorted but not quite enough to blow the fuse.Probably your best bet would be to contact a wrecking/salvage yard to get the fuse box,I do beleive it can come from a Prism or a Toyota Corolla(a good salvage yard will have a compatability manual)as far as installation any good mechanic will be a able to do it.
look for a short to ground in the tail light circuit. Place a 12v light bulb in place of the fuse. If there is a short, it should light. When you find the short, the light will go out. Looks like the brown wire is the focus.
96 f250 circuit, don't have 95. similar. please rate as fixya if this helps.