Question about 2008 Mercury Grand Marquis

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Interior light fuse blows repeatedly

#18 fuse that protects interior lighting blows after replacement.

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Pick up an automatic circuit breaker at a parts store making sue it is the same ampereage. Put it in place of the blown fuse and give it a few seconds. It will trip and reset itself, giving you an opportunity to check which light is shorting out. Try a fuse 5 amps higher and see if it blows. If not, it just might be a load issue and not necessarily a shorted circuit. Perhaps the fuse was replaced before with one underrated. Do not exceed 5 amps over what you pull out. Good luck and keep a n eye on everything until the breaker breaks the first time.

Posted on Jun 23, 2009

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You have a positive wire grounding out in your circuit

Posted on May 23, 2009


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