LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

When checking fuses, does the battery need to be disconnected?

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Old 10-03-2004, 07:25 PM
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When checking fuses, does the battery need to be disconnected?

I'm a real novice at car repair, but my driver-side window in my '95 Z28 isn't working. I have the Haynes manual, however I'd like to doublecheck...

Do I need to remove the battery at the negative terminal if I am going to be checking the fuses? And what about my antitheft radio? Where do I find the code to disable the lock-out? Any help would be appreciated.
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Old 10-03-2004, 07:32 PM
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Re: When checking fuses, does the battery need to be disconnected?

No you do not need to disconnect the battery to check fuses. Just pull the fuse out and give it a visual, most of the time you can see that they are blown. But to really check them you need a multimeter and set it to Ohms or continuity check. Should read 0 Ohms. A direct short. Or you can check for voltage on both sides of the fuse. If the fuse is good you should be able to read voltage on both sides of the fuse, providing that the circuit is being used at the time of checking.
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Old 10-03-2004, 07:48 PM
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Re: When checking fuses, does the battery need to be disconnected?

Great, thanks! Just for future reference, what about the antitheft radio? Does anyone know how to turn off the lock-out?
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Old 10-03-2004, 09:50 PM
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Re: When checking fuses, does the battery need to be disconnected?

Originally Posted by Brangeta
Great, thanks! Just for future reference, what about the antitheft radio? Does anyone know how to turn off the lock-out?
If your radio already has a code stored in it, you need to know what it is to be able to remove it. If there is no code stored, there is nothing to worry about. Info about the code is in the owner's manual.
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Old 10-05-2004, 10:56 PM
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Re: When checking fuses, does the battery need to be disconnected?

the quicker way to test the fuses is with a test light. If it lights its good
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Old 10-06-2004, 03:10 PM
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Re: When checking fuses, does the battery need to be disconnected?

Thanks for the help guys! Now... I just need to pick a time when I can park it in front of Autozone in case one is broken/useless and it is essential for something . I really don't want to have to walk haha.
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Old 10-06-2004, 03:45 PM
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Re: When checking fuses, does the battery need to be disconnected?

No worries...if one is bad, you can just take one from another non-critical spot and replace it later. It's best to stick with the same rating, but in a pinch you can use a different one, preferably just slightly higher.

Chances are if your drivers side window isn't working, it's probably the switch...common problem on these cars, along with the motors, but that usually shows up by going really slow for awhile before it dies.
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