Hello. Waiting for a tow truck. I stopped at an auto store for oil and truck wouldn't start. Had the guy use the power pack on it and still acted like the battery was weak. Saw some smoke from the loom that goes to the headlights. Unplugged all those and put new battery in. Still only turned over a little. Pulled starter and had tested here...tested good. Re-installed and still only turns over very slowly. Any suggestions? Thanks!