15A turn signal/back up lights fuse blows

[NevaMO]

1992 Chevy C1500 Silverado 4.3L V6 Manual

 

got an issue with the 15A fuse blowing when I put the truck into reverse, I did notice the last few months the back up lights would flicker when I would back up

 

I have disconnected the rear lights entirely, still blows, I've checked all the wiring  from the connector all the way up to the front where the power junction block is (I'm not sure if that is what is is called, has 3 different connectors on it) and cannot see anything broken anywhere, still looks good although dirty from the years

-only part I cannot check is the section where the fuel tank is at

 

I was trying to find something online that would show which color of wire I could possible cut to see if the problem is on the back half of the truck or the front half but the Chilton manual and other manuals online don't specify which of the 6 or 7 wires is the one that runs to the back....or if anyone has any suggestions...would be awesome

[Brian Lindsey]

you definitely have a short somewhere , what you can do it follow the wires and where there is a plug , unplug and check it both ways for a short, have you tried alldatadiy.com , mine has diagrams and tells you colors , not the best diagrams but the are readable 

[riverbanks]

Unplug the reverse light switch,see if fuse doesn't blow,it's on the tranny

[NevaMO]

3 hours ago, riverbanks said:

Unplug the reverse light switch,see if fuse doesn't blow,it's on the tranny

So this was the issue, forgot to update last night when I got it fixed, I unplugged it and it didn’t blow, got the replacement and it work great now!