Rewiring my h farmall with 6 volt positive grd. Generator with just cutout...I looked at several schematics witch shows everything except the ammeters never show the neg or positive side of the gauge . Does the wire that comes from the fuse go to the positive or negative side of ammeter ? And where does the other side go to. And does the metal housing the light switch and ammeter is in need to have a ground to charge.
- Thread starter marlin54
- Start date
Bob M
Well-known Member
The fuse wire should go to the ammeter post that's wired to the cutout "BAT" terminal.
As for which ammeter post (+ or -) to use it doesn't matter if they are not marked. Simply connect the wiring to the ammeter whichever way is handiest then "load" the ammeter by turning on the lights or ignition. If the ammeter deflects to the left (discharge) you are all set. However if it deflects to the right, simply swap the wires between the two posts and you'll be good.
And yes, the switch box cover must have a good ground for the generator/cutout to work. I like to run a dedicated ground wire from the light switch base to the grounded battery post - eliminates possible high resistance between the switch and cover, the cover and box, the box and steering post, and the steering post and tranny deck.
As for which ammeter post (+ or -) to use it doesn't matter if they are not marked. Simply connect the wiring to the ammeter whichever way is handiest then "load" the ammeter by turning on the lights or ignition. If the ammeter deflects to the left (discharge) you are all set. However if it deflects to the right, simply swap the wires between the two posts and you'll be good.
And yes, the switch box cover must have a good ground for the generator/cutout to work. I like to run a dedicated ground wire from the light switch base to the grounded battery post - eliminates possible high resistance between the switch and cover, the cover and box, the box and steering post, and the steering post and tranny deck.
gene bender
Well-known Member
yes it needs to be grounded or the system will not charge
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