Quote:
quote: When checked, the voltage is 11.2 at the connector to the motor when the switch is pressed to the up or down position.
is this with the motor connected?????? if not- then check it with it connected and report.
But also realize the motor grounds through the second wire so rather than reading voltage to a known good ground read the voltage through the second wire.... They switch polarity to reverse these motors... So the ground path is through the single switch back to the master switch, through five separate connectiona on the ground side plus seven connections on the power side.. Add two switches per direction of power flow & it's easy to see why after 35 years they have issues...
Add the relays, it'll work better than it did when new... 
"The Armies of our ancestors were lucky, in that they were not trailed by a second army of pencil pushers."
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