Think we are "getting our wires crossed" in translation. Picture is worth a thousand words.
Attachment 123895
This is a Lone Star solenoid. The terminals we are going to test with are the big bolt ones.
They are labelled +, - , M1 and M2.
Make sure that all the wiring, including the motor connections are as it was before we started all this - all connected.
Do these checks and report back.
Turn on the circuit breaker.
1. Red meter lead to + terminal, black meter lead to - terminal. Should read 12 volts.
2. Now press the switch for down - record voltage (should still be 12)
3. Now press the up switch - record voltage (should still be 12)
Assuming we had 12 volts across the + and - terminals the whole time, we now move the meter leads - one to the M1 terminal, the other to M2 terminal.
Should be nothing until switch is pressed.
4. Push the down switch - record voltage and polarity (Should read 12 volts + or - doesn't matter which and the motor should run)
5. Push the up switch - record voltage and polarity. (Should read 12 volts with the opposite polarity to test 4 and the motor should run).
We'll get this nutted