Driver side brake assembly not working

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PauL3465

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Aug 30, 2022
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New York
First Name
Kevin
Truck Year
1986
Truck Model
K20 Custom Deluxe
Engine Size
6L?
Driver side brake light, reverse light, and rear turning signal do not work. I'm new to square bodys and trying to get this to work before winter for plowing. I'm not 100% sure where yo check first or if there's just a fuse I need to check for the whole assembly.
 

WP29P4A

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Nevada
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Mike
Truck Year
1987
Truck Model
Sierra Classic V1500
Engine Size
350 TBI
It's most likely going to be a bad ground, on several models the ground is attached behind the tail light housing, or near the license plate mount. Find the wire that is screwed to metal. Make sure its clean and tight, no paint, no rust. If it was a fuse it would affect both sides.
 

Bextreme04

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Oregon
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Eric
Truck Year
1980
Truck Model
K25
Engine Size
350-4bbl
Don't miss the obvious... have you checked the bulbs?
 

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