You need to go to a car parts store, and get a repair manual for your car. They cost about $16.00 Or, go to a Public Library.
Insert the key and turn to the RUN position. There is a small hole in the steering column below the ignition switch. Insert a 1/8" drill bit (or something similar size) and push upward on the retaining pin in the hole. As you do this, pull out the cylinder lock. It should come right out. To reinstall, turn the new cylinder to the RUN position. Again depress the retaining pin and insert the switch into the steering column. Make sure the new switch is completely seated & aligned before you turn to the OFF position. This will let the retaining pin extend into the hole.
key does not start the truck and will not come all the way back to lock.
on the ignition switch down by the hazard light control you will see a pin hole turn the lock cylinder to run push a small punch eighth inch iI think may bre smaller.then you will be able to slide the cylinder out may have to pry a little. If you don't have the key you will have to drill the pin out.
Remove ignition transformer to reach it. There should be 2 camshaft position sensors on the 5.4L engine - visibly on the front right cylinder head and the other visibly on the front of the left cylinder head. Remove ,Replace, then return ignition transformer.
Ignition relay is probably shot. It is in the power distribution block in the motor comprtment.
Well you could ram a flat head into the ignition and turn it to the on position then take steps
http://www.dslreports.com/forum/remark,15171433
With your ignition key in the ON or ACCESORY position press the SELECT button in your overhead console
TAKE A ALLEN KEY SMALL ONE AND RIGHT UNDER THE SWITCH IS A HOLE PUT IT IN THERE AND TURN THE KEY TO START POSITION AND PUSH THE PIN WIGGEL THE IGNITION SWITCH AROND IT WILL COME OUT
Yes, the 300 six cylinder was always basically the same. The newer motor will have fuel injection. You have to swap that or change out all the wiring.
it may not be you ignition relay, but your alternator.
The 1975 Ford F150 4.9 L ( 300 cubic inch ) straight 6 has electronic ignition , it doesn't have points
Near the starter on the exhaust header. If it is 1990 it will be fun to break the rusty sensor out of the truck. good luck