When activated it also closes the contacts with the battery + to starter motor.
Using the starter solenoid jump the small middle terminal with the starter terminal at the rear of the solenoid
croos screwdiver across big terminal and small terminal
From battery to starter solenoid
Battery + cable should be connected to large terminal on solenoid Starter cable should be connected to other side of solenoid (if so equipped) Trigger wire should be connected to smaller terminal (if 2 on replacment part disregard 2nd)
To hookup the solenoid switch on F150 pick-up 5.0 after replacing it, first connect a voltmeter or test light to the solenoid's S terminal. Make sure the starter receives voltage at that terminal when the ignition switch is in the on position.
The positive battery terminal goes to ground, the negative terminal goes to the starter solenoid.
Mostly fusible link for starter solenoid is located very close to the battery or between the battery fuse and terminal.
Positive Battery Cable Routing on F-150sI'm not familiar with your '85 model, but I have both an '89 and a '93 F-150 with the same 4.9L/300 straight six engine. On both of my vehicles, the cable from the Positive terminal of the battery goes to the input [always "hot"] terminal of a solenoid mounted on the right front inner fender. A similar heavy cable goes from the solenoid output [ignition switch controlled] terminal to the starter.There are also lighter conductors that go from the hot input terminal of the solenoid to the vehicle's electrical system.
Did you put the small solenoid wire on the correct small terminal?
Find the positive battery terminal. Follow the thick cable from that terminal and it will lead to the starter solenoid.
One large terminal post to battery Other large terminal post to starter Small terminal post to trigger wire If extra small terminal post disregard
it should be your starter solenoid. Your positive terminal on your battery will have one wire running from the battery to a terminal on the solenoid. (there might also be a few more smaller wires leading to that terminal from under the engine) Another wire should be leading from the opposite terminal on the solenoid directly to your starter. There will also be one or two smaller terminals on the front (one labeled "s" and "i". the one labeled S will have a much smaller wire leading to your ignition on the column.