Have a problem on my 1986 Humvee M998. I changed the rear drivers side taillight and side marker. Taillight is old bulb style and side marker is LED. Hooked all wires back up and grounds also. Everything cleaned and dielectric grease applied. Went to start vehicle and when I click it wait it stays lite and there is a clicking noise every couple seconds. Truck ran before I changed lights. Also I made sure it's in neutral and both batteries are at 12.6 volts each. Any suggestions to get my baby fixed??