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Oh Man, I hope someone can help me out. Last night Im warming up my 86 coupe, getting ready to head home from work. As always I turn the lights on and take a walk around. To my Surprise! NO TAIL LIGHTS. My center brake lamp works, my signals work, Also with the 4 way flashers on, all bulbs light up. I found the fuse totally melted out. Everytime I put a fuse in it, the fuse would pop as soon as I turned on the power. Can someone help a fellow vette owner out! Oxon Hill Maryland
I had a short like that in my blazer and to find it, I went to radio shack and bought a small 12v buzzer, and wired it across the blown fuse. As long as there is a short, the buzzer will buzz. Then I went and moved wires around until the buzzing stopped.
Most likely, it is related to some work that you did. for me, it was a piece of plastic trim was crimping a wire. I had replaced that trim piece about 2 months before the fuse blowing.
Depending on the current required to make the buzzer buzz, it might buzz even when there's no short. Just the normal current thru the circuit you're trying to test might be enough to activate the buzzer. I like to use an old headlight wired across a burned out fuse. The bonus of this technique is that the circuit you're trying to test will probably work just fine, and the headlight won't glow until the short circuit causes the current thru the headlight to spike.
Depending on the current required to make the buzzer buzz, it might buzz even when there's no short. Just the normal current thru the circuit you're trying to test might be enough to activate the buzzer. I like to use an old headlight wired across a burned out fuse. The bonus of this technique is that the circuit you're trying to test will probably work just fine, and the headlight won't glow until the short circuit causes the current thru the headlight to spike.
that's interesting, when I used it, it was a short in the dome light system and the circuit was definitely active. Meaning the doors were open so the lights were on, creating the potential ground path for the buzzer. It was only like a 65 miliamp buzzer but it worked perfectly, stopped buzzing the second I located the short. I will have to keep that in mind though if I use it in the future, the ground path you suggest could cause a lot of frustration............
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