Thanks for the helpful reply. This is my stepson's truck & I don't have an owners manual, but I don't think it has the auto-turn-off feature although I'm not sure. I may have to sign up with All-Data or a service similar to it to get the schematics for that year model. Thanks again for your help.
My parking lights started staying on with headlight switch off & ignition key out. You can reinsert key in ignition switch, in the off position & parking lights turn off. I've unplugged the headlight switch & symptoms stay the same. Also tried another taillight relay, no help. If anyone has had...
