Re: Why doesnt my turning signal work when the headlights...
Could have something to do with the 'flasher unit' cylinderical unit which tells the globes to flash or the headlight/wiper/turn signal swith needs replacing or turn signal fuse has blown.
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was the correct bulb used? this sounds like a single function bulb was used NOT the bulb that will light with the headlights and ALso produce turn singles
Check the fuses for continuity using the tone alert on your digital ohm meter; you don't have to pop the fuses out. Then I would check the turn signal relay.
If you are not getting power from the headlight switch for that circuit, but the other side works, you'll have to trace the wiring. The socket has two wires plus a ground. One wire is for the tail lamp circuit and the other is for brake-turn signal.
The turn signal circuit is different from the parking lights. So the headlights would not be involved. You should have power on one side of the bulb for parking lights and the other for turn signals. If you have no power for the turn signal circuit, I would look at the turn signal switch. It powers each bulb separately.
in the rear lights you may have two bulbs one is the turn signal the other one is stop light / tail light the stop light / tail light has two filaments, one for the stop light (21 watt) & one for the tail light (5 watt) it is possible that the tail light filament is blown, try replacing the bulb to see if that fixes the problem,also check all the fuses as well.......hope this helps......cheers.
Your turn signal ground most likely is hooked up to the ground wire from the headlights. In other words, when the headlights are off, the signal lights ground through the headlights. But when the headlights are on, with their much greater current, they ground through the signal lights and essentially make it so that the signal lights have no ground. Make sure your headlights and signal lights have their own proper grounds.
Did all these problems happen all at one time?? If so you may have a bad body ground. Try running a electrical wire from the (-) negative side of the battery to the body and see if this works. Be sure this wire is to a place with no paint as low voltage electricity will not flow through paint.
A). If not try replacing the turn signal flasher for the turn signal problem. This is usually the culprit and it's easiest and cheapest to replace. The turn signal flasher will be found under the driver side dash next to the hazard flasher. Turn the hazard flasher one to locate it. If you want try swapping the turn signal flasher with the hazard flasher to see if this fixes it. They are the same style flasher.
If this doesn't work you may a faulty turn signal switch or some wiring issues.
B). It could as simple as the head lights bulbs need to be replaced, it's rare but I have seen when both bulbs blew at or near the same time. If your able check the voltage at the head sockets.
C). Could be a bad blower motor or switch. I'm not sure if these models have a resistor block or not. The resister block controls the electrical current going to blower motor which controls the speed of the blower fan.
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