After installing my boostcontroller and oil temp gauge. My headlights popped open and ever since it wont close. The obvious suspect is not plugging in the switch behind the dash but it is connected... Any clues on what my of caused this or how I can fix it??

 

check all the grounds. trace all the wires going to the headlights and make sure all the grounds are connected and in a good spot. i had the same problem with the radiator fans. they stayed on all the time even with the car off. i traced it down to right beside the ecu and the ground was disconnected. i bolted it back in and ran like a champ ever since.

 

and if that doesnt work use visine

 

lol good call on the visine.