Been troubleshooting this issue for days now on my 90 k1500 and cant figure this issue out. With the key on (not running), i try the left blinker and get the middle bulb on the rear light to blink but its super dim and blinking at a normal pace. The passenger side blinks super fast but no lights...
Just bought my high school truck back from a friends father about 6 months ago and needing lots of work in both performance and paint/body work. Its a 1990 chevy k1500 z71. Truck runs but like crap. Been looking up troubleshooting issue and upgrades on the interwebs and saw this site a few times...