I have 2006 Mustang GT and I am having a problem with front passager side turn signal . When I turn the car off the turn signal light stays on just a soild yellow light . I have removed the battery power to see if this might help but no luck . I does not even blink in the front anymore on that side, so I have taken out the bulb for now so the battery doesn't die over night. Any suggestions ??? Ronnie

 

I don't know if this is the exact cause, but one of the ways juice gets to the signal lights is through the hazard flasher system. Might be a good idea to start with that.