Question about 1988 Ford Taurus

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Fuse constantly blows in my car.

I have a 1988 ford taurus with a Panasonic CQ-C7205U/C7105U head unit.

It has been fine since it has been installed up until about 4 days ago.
The fuse blew, I though, big deal. I replaced it, and it blew the next day. It has been blowing every day since then.

It has not blown while the stereo is turned on. I have never heard/witnessed it blowing, its always when I go to turn my car on, the fuse is blown.

It is a 15 amp fuse for the head unit, and the inside lights and dash lights that keeps blowing.

I have taken the head unit out and looked for exposed wire within the harness area, but couldn't find anything.

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  • Ford Master
  • 3,433 Answers

Did your radio only work with the tail lights on when the lights did work? There is definarely a short. If you can, get an automatic circuit breaker that fits in olace of the fuse. This is a trick I used when detecting shorts. The breaker will reset every few seconds and you won't have to keep replacing fuses The lights will go on and off as the breaker trips and resets and will stop cycling when you find the problem. This way gives you time to wiggle and wait wiring and connections and even disconnect things to narrow it down.--- Good luck........ Stay focused on any new wiring in the lighting circuit including the bulbs. Anything the switch controls including the switch. The auto breaker is available at parts stores and if you can't get one from a car parts store, Truck dealers do carry them. Get one that is lower than the one it csalls for. Ie; It normally calls for a 15 amp, get a10 amp. It will cycle faster. Do not bypass the fuse for there is a risk of fire. The breaker makes it a one man job . This trick has saved me a ton of diagnostic time.

Posted on May 24, 2009

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