To Ground or unground Stator on 70 thru 79 with VR-115 rG

XS650D

XS650 Junkie
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Just read that if u have an earlier model with a grounded brush and want to use a separate Rec and Reg.
Note: Chrysler VR-115 with a pulsed line plus I have the Mikes Rec (both Solid state units) Does the Pos brush need to grounded or not.See Post attached.
Conflicting info here.
The factory mechanical, relay type regulator on earlier models provides a pulsed battery to the green wire brush on the stator. The other brush is grounded.

Starting in 1980, the regulator provided a pulsed ground to the same brush as above, so the other brush had to go to battery.

There are some aftermarket regulators that also provide a pulsed ground to the green wire brush, so if you have an earlier stator, you have to isolate the grounded brush with nylon screws and apply battery to that brush in order to use these types of regulators.

One of the popular mods is to use a Chrysler regulator from the 1970's that is readily available and only costs $15. This regulator provides a pulsed ground on the green wire brush so if you are going to use it on pre 1980 XS650's, you have to either install a '80's stator with the ungrounded brush or you can just isolate the grounded brush with nylon screws and feed battery to that brush through a fuse.
 
As far as I know the VR-115 is a type 'B' regulator. Keep the brush wiring as is. No nylon needed.
It's the type 'A' that regulates the ground on the green wire and has to be isolated.
 
Yes, don't change any of the brush wiring. The VR115 sends power on the green wire just like the original regulator did. That's why we use this regulator model on the '79 and older bikes, it's "plug and play", so to speak.
 
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