It goes on the inside sounds like to have a ground problem now. Clean off all the paint and run a strap from your frame to you motor. Then check to make sure your cables are in good shape. Charge the battery and it should turn over. The key here is to make sure all the paint is off where the ground straps bolt on. Let me know how it worked for you
RICK
tech dept
1.816.741.8029 ext 500
www.chevyduty.com