1991 plymouth acclaim break & signal lights not working

if you mean the DRL module it think its under the left front fender in front of tire behind bumper along frame.

turn signal switch is bad located under dash or in trunk it looks like a big black fuse look on google for location

Try replacing light bulbs and flasher which may correct the turn signals. Check all fuses, however as for the speedometer, the plastic clogs or wheels have run their course, If you intend to replace these, suggest you purchase a repair manual for your vehicle.

I had the same problem with my 1991 Plymouth Acclaim 3.0 liter engine. Check to see if your SBEC (computer located next to car battery) has gone out. Replacing it should solve your problem.

Fix the door switch that turns it on.

If the speedometer is working but not the odometer it's in the speedometer it's self. replacing the speedometer cluster is the easiest their available on ebay or your local salvage yard.
what happens is the trip odometer wears and sticks, theres a small motor on a circuit board with a plastic sun gear, inside the speedometer housing. it drives both the odometer and the trip odo
the teeth strip off the sun gear and odometer stops.

Try (autozone.com ) & sign up for free access to manuals, pictures, step by step instructions plus parts prices. Just enter your vehicle info & go to manuals, click on engine & engine overhaul, then scroll down left side & click on water pump.

hi there here is the answer to your question.....the heater motor or blowere motor is located in the dash under ur radio..it will be an easy find once you have removed the radio...let meknow if u have any other questions thank you

The problem is most likely not a bulb and certainly not a fuse but the 'flasher'. The flasher is located under the driver's side A/C duct above the fuse box. It just plugs in so you shouldn't need any tools.

Most likely cause is the vehicle speed sensor located on right side of the trans near the right axle.