80' fuse box diagram,,,,,

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jminor

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I searched for this subject first with no luck. What I did find, links no longer worked. I have an 80' c10 and I cannot find which fuse in the panel is the REAR lights / brakes.
The issue is that I had the box off, checked all wiring while apart and it worked. Put the box back on and now there is nothing. I have checked all the way from the back of the fuse box and no juice.
I'm attaching a photo of the box for reference. It looks like the second fuse up on the far right is possibly part of it.
I appreciate all of your time and help on this.
 

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Jgonick

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Yes- 2nd up far right- says “Stop/Haz”. A orange wire runs from that up to the hazard flasher- (top left) and continues on to the brake switch- then a white wire runs from the brake switch to the turn signal switch. A yellow & dk green wire leaves turn signal switch and goes to brake lights.

If you are talking about tail lights (not brake lights) it is the fuse labeled “T/L CTSY”.

below is a link to wiring diagrams

LINK- wiring diagrams
 

jminor

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Yes- 2nd up far right- says “Stop/Haz”. A orange wire runs from that up to the hazard flasher- (top left) and continues on to the brake switch- then a white wire runs from the brake switch to the turn signal switch. A yellow & dk green wire leaves turn signal switch and goes to brake lights.

If you are talking about tail lights (not brake lights) it is the fuse labeled “T/L CTSY”.

below is a link to wiring diagrams

LINK- wiring diagrams
Fantastic! Thanks for the clear direction. A huge help.
 

jminor

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Fuse was found and it was BLOWN.
Replacing it however did not fix the issue.
The fuse tests hot on both posts at the fuse box.
Still no juice to the wires when I check them along the path.
Should the wires be "hot" anywhere along them?
There a couple of junction connections, when I pull these apart and test for hot, it's not there.
 

Matt69olds

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455 Olds
Before doing anything, push and pull the hazard switch a few times. Sometimes that cleans the contacts and gets troublesome lights working again.

Check the brake light switch. See if you have power on the orange wire, then press the brake pedal, you should then have power on the white wire. If so, check for power on the white wire at the turn signal switch, again with the pedal pushed. Got power? Check for power on the yellow and green wires, with the pedal pushed. If you have power, then the problem is between the turn signal switch and the back of the truck. If you don’t have power, replace the turn signal switch.
 

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