I have a 2000 3500 laramie. The turn signals work fine until I turn the lightns on. When I do turm on the lights the left turn arrow on my cluster lights up. The right turn signals work fine but have no left? Anyone had or seen this issue?

 

Have you visually confirmed the light flashes outside when headlights are off? Does parking light come on with headlights?
Is one or the other burnt out?

 

All lights blink and light up with the lights off. Yes parking lights come on with headlights. I can move the turn signal switch up and down and make the left blink, but I guess that is just inturpting the power and then back on. Checked all the bulbs and they all are good and work.

 

I would try replacing the front and rear bulbs on the left, regardless of whether they work. Sometimes one of the filaments can break inside the bulb and contact the other filament, creating a short between the park and turn signal circuits, which would create the exact problem you are having.

 

OK, Thanks, will give that a shot tomorrow and see what happens.

 

also try clean grounds on the left lights front and rear. sounds like the park lights are grounding thru the turn signals.