Do the starter have a wire that stops the horn, radio, and power windows from working ?

Check the key switch.

short probably in the radio. if it is after market radio there is bare wires some were some radios like kenwood when shorted just need to disconnect the power like your key on/off and it will reset

You might want to check the starter if you can try tapping it hard with something then try to start it again if it starts then all you need to do is have it changed out if nothing happens then you might also want to check and see if there is a broken fuse link going to the starter I know some vehicles have a fusible link in line with the starter it acts as a fuse but looks like a wire it will burn in half interrupting the voltage to the starter and like you stated everything else will work lights radio horn but the starter will not turn over hope this helps you.

i am a tech at a ford dealership. it sounds like you have a short some wheres around your steering column that maybe what we call "backfeeding" to other systems. the area where the tilt is on the steering column is a good place to check. also remote starters can cause alot of havoc on a vehicle.

This means theres a dead short somewhere, so the systems it runs have a short you will need to remove power from each one until the short stops. take a look around for wires touching ground, the raido woundnt be the problem it has its on fuse and so does the horn, remove the starter wire, the small wire to starter and leave the big battery cable going to starter and then try to start it, i know it wont start but this will tell you if its the starter thats shorting out, if that doiesnt do it then continue remove connections until you locate it, also repair the wire and then turn the key on and see if it blows the fuselink if it doesnt then you know its the starter, but then crank and see if it blows to make sure, if it only blows when you crank it then its the starter, if it blows as soon as the key is turn on then its something else. hope this is helpful, good luck.

Check the power wire to the starter while turning the ignition switch. If it is getting power replace the starter & solenoid..

Could possibly be a corroded wire, loose wire, bad ground. Not necessarily the wires going to it, but the accessory wire it is attached to. My horn worked when my vehicle was sold to me, then one day it stopped working. Never did anything about it, then 4 years later my power window stopped working. I spent 8 hours tracing out the wire and I found a corroded ground wire where it goes out to the door switch. I tested the power window and it worked and pressed the horn button..it worked too. Give it a try. Or you might just have a bad horn, try to tap it. It might work.

could be the problem check ur wires on the starter as well from battery,to alt

Did you try disconnecting wires at horn?

check the fusible links on the starter solenoid