Blinker stops working when headlight switch is on.

[NathanPhelps]

Having a problem with my right turn signal and hazards. They work completely fine when my headlights and DRL are off, but the minute I turn my switch for my DRL or headlights on they stop. I also noticed that my dash lights flash with the hazards. The left blinker works fine. Brake lights work fine. Any ideas?

 

[SunlitComet]

i was gonna mention to check your ground at the rear frame. but in your case i think you better inspect the main harness bundle up in the dash for wire abrasions. that should be the only area where all those wire circuits are together and could cross each other if the insulation is damaged.

 

[NathanPhelps]

Where is the main harness located at in the dash? General location? Any chance it could be the multi function switch?

---------- Post added at 02:26 PM ---------- Previous post was at 01:52 PM ----------

Update: I found out, that if the headlight switch isn't plugged in, but on that the right blinker and hazards work fine.

 

[SunlitComet]

multi-function switch can effect the tail turn and headlight beam selection but it does not make you dash light flash with the blinker. you dash lights are fed positive-switched power form the headlight switch. only that switch should be able to turn them on and even the it cant make them flash. there would have to be some freak wire problem for that to occur.

you can try getting another head switch to see what happens but if you want to track down the problem before throwing parts at it it will be time consuming.

the main harness under the dash left side runs from the fire wall all over underneath to include the harness from the multi switch and ignition wiring, and various lighting and control circuits.

---------- Post added at 06:58 PM ---------- Previous post was at 06:55 PM ----------

and still while at it check the ground connections on the dash support bar around the steering wheel area as well as the rear of the left frame well and the ground on the right fender well near the battery. also look for any wiring jobs not looking like factory work.