Re: ammeter or voltage gauge
Just consider your 0 point on the gauge to be 12.6 volts which is battery voltage. It should almost always read above 0 with a good charging system. If it reads over 0 then system voltage is higher than battery voltage which means alt is outputting fine. You can hook the wires wherever you want.....one to the ACC or IGN spade on the fuse block and one to the battery would work but again, the gauge should have been calibrated for the stock system voltages and charge wire values (I assume) so I don't know what the gauge will show on the positive side.
Dart 400-AFR 195-224/224 HR-Powerjection III TB with F.A.S.T. Sportsman XFI
TKO 600-Moser 3.42-Detroit Truetrac
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'69 Camaro Beater-SFT 327-M20-Moser 4.10-sold
'02 Z/28 vert-stock-sold and totaled