my 88 f-150, my brother got it from a friend of his for a bottle of rum, he got it with keys, but never needed them as the igniton was broken, it was rusty and crappy, so the doors were never locked, when i moved to town, my brother had just lost his keys for it, so now he HAD to just turn the whole thing, one day while at the grocery store, the tumblers fell out and now the ignition was locked, "shit" we both thought... luckly we were next to a pawn shop, so in we went, bought a crescent wrench and a square shaft flat head, and snapped the lock, however everything was still in tact, despite all of the random parts that fell out of the keyhole... we were so happy!
a few months later he gives me the truck (no rum) and i drive it (again, with no keys, but everything still looked fine) and the ignition, which had been acting up from time to time, wouldn't start the truck, so from here on out, i would turn the ignition to on, then pop the hood and cross the 2 terminals on the solenoid to turn the starter over... success! i had a running truck!
after about 2 weeks of popping my hood every time i wanted to start my truck, i wired up a button under my dash that would put 12v to the signal post on the solenoid. this was great because now no one could start my truck as the button was quite well hidden!
well, now i lived in the worst area of town, and the night before i left town for a snowboarding trip, someone broke into my truck... well, they opened the unlocked door... stuck a screw driver into the ignition and twisted as hard as they could... they ended up destroying my ignition, and making it no longer have tabs to grab on to... of course, with the solenoid not having the stock power to it, even if he had keys and the ignition was brand new, he wouldn't be starting the truck! so, for the next couple months, i drove it with a screwdriver or butter knife, which ever i had on hand... sometimes a coin... then came the day i sold this truck (yes i actually sold it!) i had been starting it with an allen key that just happened to fit in the slot quite well, so what i did was covered the allan key in 2 part marine epoxy, and jammed it in the hole... 24 hours later, i had a new tab sticking out of the side of a busted ignition... about 24 hours after that guy came and looked at it, gave me $400 and i haven't seen the truck since!