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Old Oct 1, 2021 | 12:31 PM
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Default C1 electrical gemlins

I know this has probably been beat to death but I could sure use some assistance. I have a 62 that my tail lights and instrument lights decided to not work. My head lights,turn signals,brake lights all work. Fuses check out ok. Getting 12 volts to the fuses. Just can’t seem to figure out why the others won’t work. Any ideas or thoughts would be appreciated.
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Old Oct 1, 2021 | 12:51 PM
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What about your front marker lights (not the turn signal)?
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Old Oct 1, 2021 | 12:56 PM
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Do you have 12v on BOTH sides of the tail light fuse? How about on the clips that hold the tail lamp fuse? If you pull the headlights to the park or on position, you should have 12v on BOTH sides and on both sides of the clips that hold the fuse. You could have a fuse bad in the end cap, or the clips that hold the fuse could be loose or corroded. If you have 12v on both sides, the headlight switch is working and sending the voltage. Not much else in the tail lamp circuit. There is an additional fuse marked INST that will kill the dash lights, but if the tail lamp fuse is bad (or loose) it will kill BOTH the tail lights and the dash lights. The INST fuse gets it's 12v from the tail light fuse.
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Old Oct 1, 2021 | 12:57 PM
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Originally Posted by JF in MI
What about your front marker lights (not the turn signal)?
they only work with the turn signals are on
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Old Oct 1, 2021 | 01:02 PM
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Originally Posted by 65GGvert
Do you have 12v on BOTH sides of the tail light fuse? How about on the clips that hold the tail lamp fuse? If you pull the headlights to the park or on position, you should have 12v on BOTH sides and on both sides of the clips that hold the fuse. You could have a fuse bad in the end cap, or the clips that hold the fuse could be loose or corroded. If you have 12v on both sides, the headlight switch is working and sending the voltage. Not much else in the tail lamp circuit. There is an additional fuse marked INST that will kill the dash lights, but if the tail lamp fuse is bad (or loose) it will kill BOTH the tail lights and the dash lights. The INST fuse gets it's 12v from the tail light fuse.
yes I have 12v at the fuse.the fuse box is new so there isn’t any corrosion.I pulled both fuses and they look good.
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Old Oct 1, 2021 | 01:36 PM
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Went back and checked again with fuse pulled and headlight switch on I’m only getting 12v on one side of the fuse holder. Shouldn’t I be getting 12v on both sides?
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Old Oct 1, 2021 | 01:38 PM
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Originally Posted by Fatdaddy
Went back and checked again with fuse pulled and headlight switch on I’m only getting 12v on one side of the fuse holder. Shouldn’t I be getting 12v on both sides?
Yup. Bad fuse, looks like
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Old Oct 1, 2021 | 01:47 PM
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Originally Posted by JF in MI
Yup. Bad fuse, looks like
l checked it with out the fuse in the holder
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Old Oct 1, 2021 | 01:52 PM
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Originally Posted by Fatdaddy
l checked it with out the fuse in the holder
In that case it only tells you that the light switch works (presuming you had it on). The fuse completes the circuit.
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Old Oct 1, 2021 | 04:13 PM
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Read my post again with the troubleshooting and do it with the fuse in. You have to have 12 volts on both sides of the fuse, looking at the fuse won't tell you anything. I'm not going to go any further until you verify 12 volts on both sides of the tail light fuse.
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Old Oct 1, 2021 | 04:26 PM
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Originally Posted by 65GGvert
Read my post again with the troubleshooting and do it with the fuse in. You have to have 12 volts on both sides of the fuse, looking at the fuse won't tell you anything. I'm not going to go any further until you verify 12 volts on both sides of the tail light fuse.
don’t seem to be getting anything on the instrument fuse
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Old Oct 1, 2021 | 04:33 PM
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Originally Posted by 65GGvert
Read my post again with the troubleshooting and do it with the fuse in. You have to have 12 volts on both sides of the fuse, looking at the fuse won't tell you anything. I'm not going to go any further until you verify 12 volts on both sides of the tail light fuse.
getting 12v out of both ends of the tail light fuse and nothing on the instrument fuse

Last edited by Fatdaddy; Oct 1, 2021 at 04:33 PM.
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Old Oct 2, 2021 | 02:11 AM
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If all that's correct, you have to have a wiring issue in the fuse panel. The instrument fuse won't cause the tail lights not to work.
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Old Oct 2, 2021 | 08:08 AM
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Originally Posted by 65GGvert
If all that's correct, you have to have a wiring issue in the fuse panel. The instrument fuse won't cause the tail lights not to work.
ok thanks for your help
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Old Oct 5, 2021 | 10:48 AM
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I was going to take the hl switch out and check it. Found out it was loose so I tightened it up and then reached up to the top of the switch and press down on the connectors and low and behold one of them wasn’t on good. Everything working great now. Thanks for all the input
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Last edited by Fatdaddy; Oct 5, 2021 at 10:48 AM.
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