I have a ford f150 changeing the solenoid and not

https://faceitsalon.com/1989-ford-f150-starter-solenoid-wiring-diagram-database/

https://automotorpad.com/ford/1136348-ford-f150-starter-solenoid-wiring-diagram.html

https://annawiringdiagram.com/wp-content/uploads/2019/02/wiring-diagram-1989-ford-f150-data-wiring-diagram-site-ford-f150-starter-solenoid-wiring-diagram.jpg

Sounds like a broken wire from the ignition switch to the solenoid. - if it starts when you crank it over, the switch is probably good, because if the switch was bad the control module would not get the signal to keep the car running - it would think the key was turned off.
But sometimes you do get a bad solenoid or switch, coming new off the shelf, due to quality control issues. try another solenoid to be sure. or if the car cranks but does not run, try another switch.

battery cable goeas to the right side of the solenoid, starter cable to the other, and ignition wire goes on the left small stud sticking out of the front of the solenoid

Thats what it sounds like the wire from the battery goes on the big stud in the middle .

SOUNDS LIKE LOOSE WIRES AT STARTER OR GROUNDS TO ENGINE BLOCK
ALSO MAKE SURE BATTERY CONECTION ARE TIGHT AND CLEAN
IF ALL THIS CHECKS OUT HAVE STARTER BENCH TESTED

Hi:) If the engine will turn over but not fire up Check to spark module on the side of the distributor and check to make sure it is getting fuel from the fuel pump in the tank and the fuel relay on the drivers front inner fender. If the engine won't turn over check the solenoid and starter. And check for corroded green wire while you are check everything else.

Make sure you have the right solenoid. There are 2 different ones. You also may want to have your starter tested.

TRY UR SPARK PLUGS AND WIRES FIRST
MY BOYFRIEND HAS A 93 FORD F150 AND HE STARTED WITH THE BATT ALTERNATOR STARTER ETC WHEN HE CHANGED PLUGS AND WITRES IT FIRED UP

1 Inspect Ignition Switch Improperly Connected or Faulty Ignition Switch. 2 Inspect Battery Battery Discharged or Faulty. 3 Inspect Battery Cable Coroded, Broken, Shorted or Poorly Connected Battery Cable. 4 Inspect Solenoid Switch Starter Solenoid Switch Faulty. 5 Inspect Starter Starter Motor Faulty. 6 Inspect Wireset Worn or Damaged Spark Plug Wires. 7 Inspect Coil -Ignition- Faulty Ignition Coil. 8 Inspect Distributor Cap Loose, Cracked or Worn Distributor Cap. 9 Inspect Spark Plug Incorrectly Gapped or Fouled Spark Plug(s). 10 Inspect Distributor Cap and Rotor Kit Loose, Cracked or Worn Distributor Cap. 11 Inspect Fuel Tank Fuel Tank Empty. 12 Inspect Carburetor Worn, Faulty or Damaged Carburetor. 13 Inspect Fuel Pump Faulty Fuel Pump.

Me and a couple guys at work had the same problem. My brother who is a ford mech said it is a vacuum solenoid that is located on the passenger side fire wall. It should have 2 vacuum tubes and a small wire harness connected to it. On mine I turned 4wd on and nothing happened. I unhooked the solenoid and it engaged then I hooked it up and unhooked to and it was able to disengage. They only sell these soleiods at the dealers though for about $40. Ive looked all over the net and found nothing. But check those first cause if its no them then its either the hubs not disengaging or solenoid that engages the transfer case. Hope this helped.