78 k10 blinker problem

[Bka29]

Hello. I have a 78 k10 5.7 350. My problem is inside my blinkers flash normal (left,right,hazards). On the outside, only the front blinks but the rears do not. I have tested the buss fuses and all are good. What is the problem thanks. Also if anyone has a fuse diagram to see if I am missing any fuses or wrong ones in. Thanks

 

[Originalthor]

You ran out of blinker fluid.

Sorry couldn't help it.

I would check the bulkhead at the fire wall. Pull it apart and clean it up. I find gm used this tar stuff. It gets hard after a while and hinders connections

 

[78C10BigTen]

Hello. I have a 78 k10 5.7 350. My problem is inside my blinkers flash normal (left,right,hazards). On the outside, only the front blinks but the rears do not. I have tested the buss fuses and all are good. What is the problem thanks. Also if anyone has a fuse diagram to see if I am missing any fuses or wrong ones in. Thanks

From experience, theres a broken wire out near the end of the bed to the tail lights....