Blinker Help!

[Cam-Shaft]

Hi All,

Not to good at wiring and need some help with my 69 K10.

Headlights (high/low), center markers, front blinkers, taillights, and brake lights all work. Hazards work great as does the front blinkers.


Here's the issue. The ignition is on, I hear the blinker click and the rear blinkers both blink simultaneously. When flasher switch is in the right blinker position, front right blinker turns on and both rear blinkers are still flashing. When flasher switch is in the left position, the rear right blinker turns off but the left front/right blinkers function as they should. When brake lights are on, the flasher in the right position turns the arrow on the dash solid.

However, when the plug going to the rear lights are unplugged, the front functions exactly as it should!

I'm assuming something is messed up with the rear wiring, anyone have any ideas as to where to start?

Thanks in advance!

[Andy4639]

OK, unplug the wiring harness at the back of the truck again. Double check the fronts and make sure everything is on and working.

If so then take a test light and check the connections in the back plug that is coming from the front and make sure each one does as it should.

Rear plug wiring:

LT green = backup lights
Dark green = Right side turn signal
Yellow= Left turn signal
Brown= running lights and tag

If this checks out OK then plug it back up and check the tail light housings and the ends of the wires for the same.
Hope this helps.
Most of the time when the dash lights lights up and stays lite it's a bulb burnt out.
Link for wiring.

http://farm4.static.flickr.com/3571/...59575fe1_o.jpg