Farmall B Electrical

Check carefully the insulating bushing in the clamp that holds the ammeter into the panel. The bushing can crack/crumble resulting in a short to ground at the ammeter.

However also check the wiring between the ammeter and the cutout/voltage regulator. A ground in this wire - or a short in the cutout/VR - could also be the cause.

Good luck.

• Bob's Wiring Diagrams

See if it stops discharging if you remove the wire from the BAT terminal on the cutout relay or VR???? If so sounds like shes sticking closed as glen was also thinkin

In the alternative remove the gennys belt and if she spins like a motor Id again say the relay is sticking.

Buttttt if its NOT that then youre left with a short somewhere or shes not wired correct. If she still discharges with the wire removed from the BAT terminal then you gotta get a voltmeter and/or a test lamp n start tracing down the short.

Start by removing wires one at a time until you see where the bad short circuit is.....

SURE ITS WIRED CORRECT?? The ammeters supply terminal wires to the batetry/starter while its other Load terminal wires to BAT on the VR or Cutout relay PLUS feeds hot battery voltage to the switch.

A short or a sticking relay is whered Id start lookin ifffff fff shes wired right?????

John T

John T

Alternator setups are in the lower part, different variations for mag vs coil ignition, single-wire alterntors, etc., so choose carefully.

I'm curious, too, as to what manual you got your current setup from.

• BobM's wiring diagrams