Left Blinker Issues

RollercamDART said
I took the bulb out of the bulb socket in the front left blinker, the part that the bulb itself pushes/twists in to. If I am using the wrong terminology for the "plug" where you put the bulb and subsequently put into the housing I apologize, but that is what I am referring to. When I remove the bulb the dash indicator works again. The rear left blinker works regardless. I used a test light on both left and right, and get blinking light on the front right, nothing on front left, and confirmed that the ground terminal in the socket is fine on both sides. Just no power to the bulb on the left side.

I pulled the bulb from the front right blinker, which works fine, and tried it in the front left and same result. I dont think the bulb is the culprit. Ran a ground cable from the bulb housing in the grill to ground and same result. Maybe I am not grounding the housing from a good spot?

Insufficient ground? Could be. This is the way I would do it. If you don't get your test light to blink on the left, trace the wires back to the first connector. The turn signals usually have a foot long pigtail or so and then a connector. If you unplug the connector and still no power keep tracing the wires as far back as you can. many times they get lost in a harness. This is where a wiring diagram comes in handy. You can trace the circuit back to the bulkhead connector and test there. Look for loose or corroded connections. If still no current there then it must be under the dash or in the switch. Best to have a diagram or a service manual at that point.