Quick way to see if the ammeter is wired backwards or not.
Turn on the key, but do not start the engine.
Note where the ammeter needle is pointing.
Turn on headlights.
If the needle moves towards C the meter is wired backwards.
'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12
'52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.
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