2001 f150 won't crank over nothing
Won't turn over no clicking nothing. Dashboard and turn signals flash
for 30 seconds or so then interior lights go off like they should. When
I open doors, use turn signals, wipers, etc same thing happens.
Security light blinks and security light on cluster panel blinks also.
Factory alarm fob does nothing and lost spare key.
Make sure battery has a full charge and connections all good. I looked at your starter wiring circuit, I didn't see where your security system was involved? See the picture, have you tried jumping the starter relay to see if it will crank the engine? Use a screwdriver shank between the two large terminals, the starter motor should crank the engine. That doesn't mean it will start? Your bypassing everything when you do that, you need to make sure the tranny is in park or neutral and the parking brake is set. You don't want the vehicle to move. I don't know what testing you've done?
