need help/ not charging..I think

If the ammeter is not making connection, and I guess that's what the above post is guessing, you won't have any power in the car. You don't need an ammeter, you just need the two wires jumpered together, either bolted to the same stud on the ammeter (just in case) or with a separate bolt/ nut/ taped.

But once again, if the ammeter was not making continuous contact, the car would not have power, would not crank or start, etc.