My F250 1988 truck won't turn over. I replaced ignition switch on column, and replaced starter solenoid. I think it may be the ignition wire but I need to verify routing before I start cutting and splicing. Any other suggestions?

Is there power to the starter solenoids Purple wire?

It's called the clutch start switch. Yes, it could be bad or needs adjustment.

Push the clutch in and the switch closes contact, so power flows from the ignition switch start position to the clutch switch and on to the starter motor-well, actually to the starter solenoid on the starter motor. If you have a voltmeter or test light, you can test the clutch switch . A red and white wire to it and a red wire from the switch to the starter solenoid. When this wire gets to the solenoid, it is a black wire with red stripe. It should have voltage when key is held in start position and the clutch pedal is depressed.

If it won't crank over, it's a problem in the starting circuit, not the ignition circuit. Check your battery and starter for clean, tight connections. Listen for that click to see if it comes from the starter solenoid on the starter-maybe have someone try to start it while you watch and listen under the hood. If the click is from the solenoid (and not from the starter relay), then the starter is not getting full battery power to crank (bad connection), or the starter needs to come off and be tested.
If the click is from the starter relay, you could pull off the little purple wire to the starter solenoid and see if it has 12 volts when the key is in start position. If you have power there in cranking position on the switch, the solenoid is bad or the starter may be the problem-again, it will have to come off for testing. If you have no power at the solenoid in cranking position, the circuit from the ignition switch to the solenoid is not working. The start relay and the neutral safety switch (or clutch switch if manual transmission) are in the starting circuit from ignition switch to the starter solenoid. Good luck.

it has a good chance to being the starter relay but it also may be a break in the power line to the starter or the solenoid on the side of the starter if you replaced the starter only or not or a dead battery or check your fuses to you ignition and your relays aswell there are many possibilities that could come in to play just do a elimination start from the starter itself and check everything that in between til you get ot the battery and if witch should be depending on what kind of vehicle you have starter solenoid ground wire and positive wire going to starter relay aswell as other wires tying in to go to the positioning ignition switch that could be the problem to, it's commonly mounted down but your foot pedals on the top of the steering column and check your fuses hopefully you could try these or use any of this imformation to help you with your problem well good luck..

does it turn over or does it do nothing at all

Something major is damaged. I suggest putting a circuit breaker in place, for diagnostics, then follow wiring with an inductive Amp meter to locate the problem area.

yes i would say it's in the wiring to the ignition switch that's why it would work moving the tilt up and down. tilt is very hard on a steering column and will pull on the wires.

The ignition switch attached to the column is probally bad, check the small wire to the sloenoid for battery when the key is turned to the start postion, if no battery, your not getting power from the ignition switch to the starter solenoid.

Use a test light and check at the starter solenoid and see if the ignition start wire gets hot when the key is turned to start. If it does check to see if current then goes thru the solenoid to the starter. If it does check to see if current gets to the starter, if it gets to the starter the starter is bad. If no current to the starter or out of solenoid the solenoid is bad. If current does not get to the solenoid when switch is turned, check and see if the current goes thru the neutral safety switch (Clutch switch if not automatic). If the current doesn't go thru the switch replace the switch. If you are not getting current to the switch in the first place check the ignition switch. If the current doesn't come from the ignition switch to the safety switch replace the ignition switch.

your solenoid is stuck or your ignition switch (mounted on column not key)is bad