1987 Grand Marquis rear lights

[bubba112557]

Help,

I have a 1987 Mercury Grand Marquis with rear turn signal problems. Both do not work properly (do not blink) even though the hazard flashers work properly. Does anybody have any ideas on how to troubleshoot the problem? I need to look at the fuse. I have the flasher sending unit in the sterring column replaced before about 6 months ago.

Does anybody know what the inside of the three light bulbs are for in the rear in the trunk? It looks like a 15 watt bayonet style bulb. I do not have manual for this car.

What is the model number for these bayonet style bulbs? What is model number of the brake light if you needed a replacement? What is model for the rear turn signal light? What is the model for the rear backup light?

Thanks

[fredjacksonsan]

Bulb #'s change a lot. Take out the old ones and match them up @ the parts store. Can't rule out the possibility that the flasher sending unit may be bad, or you may have a short in the turn signal wiring somewhere. But since they light but don't flash, I'd bet on a bulb. It's easy to take out the rear lenses to check which bulbs are out.