had a customer come in the other day and he bought a truck if he turns the head lights on he can start the vehicle and run it. but if he shuts the lights off it dies. he took and rewired lights and everything according to factory routing and it still does it. description of vehicle wrong couldn't leave blank
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have not heard of this before, but he might check under dash or hood as someone might have wired it as a deterent to keep it from getting stolen. may be a relay stuck somewhere.