... and if you decide on a 3 wire (I did) run the sense wire back to a good place in the harness (I used the battery cable where it connects to the stomp switch) instead of just connecting the sense wire to the alternator's output, which effectively turns it back into a one wire alternator.
'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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