I've spent two days with a test light and volt meter trying to get it to blink. I'm pretty much convinced it's in the switch. I have a diagram and have traced wires as best I can. If I install an after market blinker switch it blinks correctly.
I have all the lights working now just not the blinkers. The only issue I have is the switch for the dash lights is bad so I tied them into the headlight switch.