I recently just bought an 06 ltr 450. The guy I bought it from said it wouldn’t start and he kept frying the starter relay. So I’m thinking it was a grounding problem. Turns out he had a power commander hooked up to it and I think the splice he had in it was jankie as fuck. As soon I touched the wire it broke apart. So I took the power commander out, took off the ground from it, put the injector plug back to the throttle body and fixed the throttle position sensor wire but it still won’t start. It just cranks over really slow ever with a charger hooked up to the battery. Any thoughts?