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Old 08-16-2010, 11:34 PM
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courtesy lights and power locks

after been sitting for a year I put fuses in my courtesy lights and power locks and they worked fine for about 12 hours.. I put new courtesy light in passenger door during the day and by night none was working..the fuses holder won't accept fuse and blows once touching holder. then I realized locks wasn't working the fuses are next to each over. using my 12v test light one side gets positive current in fuse box but different side on each of the fuses. I have 1983 Buick park avenue... any ideas?

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Old 08-18-2010, 07:39 PM
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Your post leads me to think that there a dead short in the circuit as opposed to an overloaded circuit.
Courtesy lights are powered hot + to the lights. The other side of the light circuit is completed thru the door switches to ground.
Try this test.
Connect a test light ACROSS the fuse clip. If the circuit is shorted to ground the light will light at full brightness. Close the door and observe the test light.
If the light continues to stay at full brightness the short is at one of the light sockets or the wiring from the fuse block to the light sockets.
When you are hunting for the short observe the test light. When you find the short the light will go off. Make the repair and retest.

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Old 08-19-2010, 07:51 AM
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Quote:
Originally Posted by whojohnjones
after been sitting for a year I put fuses in my courtesy lights and power locks and they worked fine for about 12 hours.. I put new courtesy light in passenger door during the day and by night none was working..the fuses holder won't accept fuse and blows once touching holder. then I realized locks wasn't working the fuses are next to each over. using my 12v test light one side gets positive current in fuse box but different side on each of the fuses. I have 1983 Buick park avenue... any ideas?
The obvious place to start would be to look at the lights you just installed, disconnect them and see if the issue goes away. On some light sockets on pin is also connected to the case of the socket so if you connected the hot lead to this pin and the case of the the socket is grounded the fuse will blow instantly.

A good fuse will light on both sides.
If you decide to do the test light test above, you may be buying a new test light as a dead short that blows the fuse will also take out the test light bulb instantly.
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