I have a 1985 model F150 that I left sitting in the back yard for a couple of years and now have some time to invest toward getting it back running. It appears that something inside the switch is froze up(tumbler pins?) Anyway, the key will not turn at all - I am sure I have the correct key, because I left it in the switch. I have tried various lubricants with no success. How can I change the switch without having the key to turn it. I have changed a couple before but I always had to turn the switch to on and then push a pin in from the bottom.