Hi all,

My daughters 91 4.3 2wd blazer has some lighting issues I cant figure out. We had them all working great after replacing the flashing unit located behind the hood release and then replaced the intake manifole (another issue). Now the lights are screwed up again. Heres the deal. The left turn signals work perfect front and back. The right tunr signal operates all 4 lights front and back (they all blink but very dim). Also the buzzer sounds in unison with the flasher. When I step on the brakes all 4 lights front and backturn signals come on as well as the buzzer. Backup lights quit worknig as well. I checked all the grouns I could find. Any ideas?????

 

You have wiring problems. You have wires that are contacting somewhere between the brake switch, signal flasher and the leads going to the taillights and front signals.

 

yea I was thinking kind of the same issue but I was wondering if there is some othere type of unit od sensor that I dont know about.