need help/ not charging..I think

You should hook a voltmeter up to the system and turn on the ign. Should show 12V. Start up the engine and the voltage should go higher. If it doesn't the alternator is not charging or there is not a connection between the alternator output and the car wiring. I personally hate amp gauges as they do not really tell the story. If it is not charging check that you have 12V to the alternator field from the regulator. Maybe the blade connector (single wire or dual wire with one leg grounded) is disconnected. That was the problem with my rod and I discovered .2 in the 1/8 by having it disconnected so I put a switch in.

Good luck.