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I dont see any urgent need to change from a relay to a VR, especially if it already has a good working LHBD switch. Besides, if the genny is bad itself, a new regulator or cut out isnt gonna fix it. Right after start up if the switch is on HIGH charge Id expect it to charge at least 10 amps n over for some minutes or even on LOW charge a few amps or so. Heres what to try to test the LHBD and circuitry and the genny..... Take a jumper and when shes running dead ground the gennys FLD post and she ought to high charge cuz thats the max (if its working) genny output. If it charges then but NOT otherwise, the problem is EITHER the switch isnt well grounded (check that) ,,,,, ,,,or the wires bad/open from the gennys FLD post up to the switch. If it dont charge a lick even with a dead grounded field, theres still a chance the genny is okay (assuming its grounded okay, check that !!!!) and the cutout relay isnt working or not grounded (check that also) so by pass jump around the relay by momentarily hooking its BAT and GEN/ARM terminal together n see if she charges then????? if so but NOT otherwise the relay is bad With the gennys field grounded n the relay by passed if she still dont charge n the genny is grounded, then its likely a bad gennyyyyy yy unless its a bad batetry or a wiring problem. PS even if the LHBD switch had a bad field resistor that ONLY affects the Low charge but she ought to still charge fine in the HIGH setting if all else is okay n its grounded. If the resisitor were bad/open then it wouldnt charge a lick in the LOW setting. Start by insuring BOTH the genny n relay have good grounds then run the field and relay tests above and look for a bad switch ground (if the genny tests okay per the above) cuz a bad switch ground can maker her fail to charge in EITHER High or Low Get it????? ????? / Let us knowwwww w John T
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