Quote:
Originally Posted by thefraze_1020
My front and rear left signals work just fine. And my hazards work just fine too. It's the signal light in the instrument cluster that turns on when I turn the headlight switch on.
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Okay, you can probably rule out bad grounds at the front & rear turn signal sockets then ... they usually cause problems with the turn signals & hazards too.
The turn indicator lights on the instrument panel are wired directly to the output of the turn signal switch that also feeds the outside front turn signals. So an incorrect bulb in the left front socket could still work okay for the turn/hazards but be be bridging to the parking light circuit and backfeeding power to the indicator light.
Finally, have you noticed any other strange behavior with the instrument panel when you turn the headlights on? If so, it could be a poor ground connection to the instrument panel. The printed circuit arrangement varies by year & cluster type, but many of these clusters have 2 or 3 ground terminals. And some clusters have the LH turn indicator sharing a ground connection with the cluster illumination lights. So a bad ground there could have the illumination circuit finding an alternative path to ground through the LH indicator bulb (causing it to light up when the lights are turned on). That type of problem usually affects at least some of the gauges though ... the ones that also share that same ground terminal.