Ammeter to Voltmeter...who does it?

My bulkhead connector is gone. Installing a painless wiring harness. 10gauge wire from alternator to the ignition switch side of a 70 amp maxi-fuse. I see the NTE 960 out there, what size cap did you use? Soldered across pin 1 and 2? pin 3 is 5V out? Also, anyone know where I can buy replacement crimp connectors that go onto the pins on the instrument panel?