Posted by John T on May 31, 2011 at 05:26:16 from (173.243.189.183):
In Reply to: 12 Volt Generators posted by sven on May 31, 2011 at 05:01:29:
The old 6 volt system may have had a Cutout Relay versus a full fledged (3 or 4 terminal) Voltage Regulator as on the newer 12 volt system. Regardless, a cutout relay is necessary, whether a stand alone cutout relay (works between BAT and GEN/ARM) or as still present in a newer VR, to open the circuit from BAT to ARM/GEN when the tractor is shut down otherwise the battery reverse discharges rapidly and the genny overheats.
If you convert from an old cutout relay to a newer VR, the gennys FLD no longer wires up to the dash to a LHBD switch, it now wires to FLD on the VR
BAT on VR up to load (NOT battery/starter) side of ammeter
ARM/GEN on VR to gennys ARM post
FLD on VR to gennys FLD post
LOAD (if it has one) wires to the BAT input terminal on the light/ign switch
Id polarize the genny BEFORE starting
If you switched from Pos to neg ground, the ammeter leads need reversed as well as the coil if it had a coil instead of a mag ignition that is. With a mag no changes required or wiring used other then a posible grounding kill switch
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