If you dead ground the gennys FLD post and if you by pass jump around the cutout relay by momentarily jumping the VR's BAT to its ARM/GEN terminal yet she still fails to charge,, THE VR ISNT THE PROBLEM CUZ ITS OUT OF THE EQUATION
THEREFORE if theres no charge its either a bad genny or else shes not wired right or the genny isnt grounded.
You need to work through my Troubleshooting Procedure posted below, in it the MOTOR TEST can test the genny independant from any VR etc
YES if you use a VR the LHBD doesnt control charging anymore, the gennys FLD post is no longer wired to the LHBD switch, but to the FLD post on the VR
If you convert a 3 brush genny from cutout relay and LHBD light switch over to a VR Id adjust the third brush for max charge
Its easy to look see if theres 2 or 3 brushes, the older gennsy were 3 brush n used the LHBD n cutout relay system versus the later 2 brush that used a VR
If its a cutout relay system many 6 volt gennys will still charge an 8 volt battery NO CHANGES REQUIRED other then if its a 3 brush Id set it for max charge
If its a VR that has a Current control relay only it can still charge an 8 volt battery
If its a VR that has a Voltage control relay or a combo current n voltage control relay, it should be adjusted to charge an 8 volt battery
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