Ammeter grounded out.

Great response from everyone I took 67Darts advice with the tester light put the ammeter wires together and started unplugging everything. When I unplugged a front parking light my tester turned off. I put everything back together and turned on the headlights for the first time in 8 years. A small but needed victory. Some good info on the MAD site about bypassing the ammeter and some other electrical upgrades. I was also thinking of adding a grounding pigtail to the instrument cluster when it goes back in I suppose could hook it up anywhere on the back of the cluster.