Farmall M VR

dougie94 · Sep 12, 2008

I just got my new VR in the mail.It has 3 prongs on the bottom and one up top,my old one has only 3 on the bottom.What is the top one on the new vr?A ground...

Bob M · Sep 12, 2008

The 4-terminal VR terminals should be labelled A, B, F and L. When your tractor was originally wired the supply to the ignition and light switch was fed from the VR's "L" terminal.

However if someone replaced original VR with a 3 terminal unit, the ign/light feed wire got relocated from the new VR's non-existent "L" to its "A".

You can wire up your new VR same as the old one and leave the new VR's "L" terminal unconnected. Or you can relocate the ign/light feed wire to the new VR's "L".

The 2nd option is preferred - but the charging system will work fine wired either way...

dougie94 · Sep 12, 2008

I just looked at the new vr again.The top is labeled GEN and from left to right it says L/BAT/F

dougie94 · Sep 12, 2008

I think I got it.I know the F post. on the gen. and the other labeled "gen" on the vr goes to the other post,then the "L" goes to lights but now I have no "Bat" wire,where do I run it from? right now I have a wire going from the coil to the starter switch then from their into the light box.

Bob M · Sep 12, 2008

The VR “BAT” terminal should be connected to the ammeter post that’s NOT connected to the ungrounded battery post.

The wiring diagram here should help!

dougie94 · Sep 12, 2008

THANK YOU!!

Farmall M VR

dougie94

Member

Bob M

Well-known Member

dougie94

Member

dougie94

Member

Bob M

Well-known Member

dougie94

Member

Similar threads