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55, I have seen them where the L terminal WAS NOT USED and they still worked fine i.e. I dont believe you need a load attached to them for it to work, UNLESS its unlike the 4 pole VR's Ive worked with..... .. GO AHEAD N WIRE SOME LIGHTS TO IT N SEE IF THE GENNY CHARGES THEN I RECKON!! One more time,,,,, ,if loads like lights n ignition are fed from the VR's L terminal (thats what its for) the gennys current to feed them DOES NOT have to flow through the VR's Cutout relay and you get better regulation n less chance of overcharging if lights are on long periods Regardless if its a 3 terminal with no L terminal or a 4 terminal with the L terminal, the cutout relay should still close (so gens output can get to n charge the batery) when the gennys output voltage rises higher then the battery and open otherwise like when the tractors off, so she dont discharge the battery n try n motor the genny. Sooooo o I still dont think it needs a load on L to close the cutout relay. Nowwwww www you say it charges if you dead ground the gennys field but if it dont otherwise, Sooooo oo I dont blame the L terminal useage, I would normally say its a VR problem (Field current control relay not working),,,,, ,,,,or the VR doesnt have a good frame ground to the gennys case (try to ground the VR to genny better n see what happens!!!),,,,, ,,,,or the wires bad from Fld on Genny to Fld on VR. THE VR ISNT WELL GROUNDED TO THE GENNY OR THE VR IS BAD IN MY OPINION if the gennys charges fine with the gennys Fld grounded but NOT otherwise. Let us know, best wishes n God Bless John T
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