Quote:
Originally Posted by ahshoe
One of the two motors (up and down) works fine. It is the other (back and forth) mode that is not working.....So with the key on ACC. and using the back and forth seat switch I got power to the relay but nothing past that. Looks like my relay is shot. Should I purchase a 6 volt or 12volt new relay?
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Do you have a '55 T-Bird wiring diagram that shows the seat motor circuits? You should have one.
The wiring diagram I have shows a large yellow power wire (with a 40A circuit breaker) coming directly to the front/rear seat motor relay from the Battery terminal of the starter solenoid, along with wires from the 4-way seat switch.
If there's no power on that yellow wire terminal on the seat relay it would prevent the seat from moving horizontally.
I'd assume this separate front/rear power wire was done done to allow the seat to move back for easier entry before the Ign key was in place.
The up/down seat motor gets its power from the Acc terminal of the Ign switch.
Disclaimer: I've not compared the actual seat motor wiring in my '55 to the wiring diagram, unless it quits working at some point in the future.
The relay may indeed be bad but having the wiring diagram to work from for better testing is a good thing too. If you buy a new relay I'll suggest the 12v version. Its coil may handle 12v power better than a 'replacement' 6v version made who-knows-where. But the voltage and current sort of offset each other so it's a tossup.