Passlock trouble after putting original ignition switch back on
My keys were taken so I decided to replace my ignition switch and keys. About a week later my keys were returned and since I hadn't bought the new switch yet I put the original one back on. Now when I crank the truck up it will turn but won't stay on. I did the hole 10 min on, 10 sec off thing but still no luck. When I turn the key on the security light no longer lights up. Someone please help me out here.