Possible grounding problem I'd try replacing the bulb since it's only that one signal acting up. you could clean out the socket first.
No, Flashing your headlight's will have no effect on a traffic signal. The reason a traffic signal changes for emergency vehicles that have the lights flashing, is, they have a special transmitter that tells the light to change. This transmitter is connected to the emergency lights so it comes on when the lights are used.
The 1989 Taurus has larger headlights separate from the turn signal(corner lamp) The 1993 Taurus has more slender headlights joined to the corner lamp.
Your turn signal probably is not flashing because the turn signal lightbulb is burnt out. You could also have a loose wire on the turn signal.
The horn, The signal lights, The brake lights, The back up lights, Flashing the high beam headlights,
A fast flashing turn signal, on most any vehicle, is an indicator that a turn signal bulb is going out or has gone out on that side(i.e. front turn signal on passenger side flashing fast, check the rear turn signal bulb on passenger side.) This will cause the light on your dash board to flash fast as well. This is generaly a good time to replace all of the bulbs, turn signal, running lights, and break lights, as they are so cheap. Also check deck light or top break light if applicable for burn outs.
First pop your hood. After you raise the hood, and your looking at the front headlights. Directly above the headlights. In each corner of the headlight is a screw. remove that screw and pull the signal light right out. turn it over to replace old bulb. Once your done reinstall turn signal. Then tighten screw back!
I unbolted the cover on the wheel well and reached in to change my signal lights. Then I bolted it back on. I hope this works.
Check the #6 fuse in the box under the passenger side forward floor.
A flashing red signal is same as a STOP sign. So prepare to stop.
Check the bulbs first. This is usually an indication of a bad bulb. If all the bulbs light, turn on the headlights and check again. The bulb that won't light has no ground connection. With the headlights off, the circuit was completed through the headlight. The turn signal switch might also be bad. But the flasher is good, since it works on the left.
That can happen when there is a bad ground to one of the lights.
Either the front or back turn signal bulb is out