1990 LX 5.0 .....Why when the key is in the off position do I get power at the 2 large threaded posts on the starter solenoid? Everything runs and checks out OK ...Just curious! Thanks
Both of the large posts have 12V? The one running to the starter should only have power when you are starting it and the ignition switch sends power to one of the little posts.
I am copying this screenshot pic from @jrichker ’s post on how the solenoid (relay actually on Fords)
Is wired and installing a mini starter at this thread. The top schematic diagram