Amp gauge

[Snuffdipper]

Are both sides of amp gauge suppose to be hot with test light? I had alternator rebuilt today and installed new amp gauge. Gauge has pos and neg side but tested them with my test light and both sides are hot. Thanks

[MiCarl]

Both sides will be hot. The (+) and (-) indicate which side of the instrument is toward the pos and neg battery poles.

[Snuffdipper]

Ok thanks

[Snuffdipper]

Rebuilt alternator and installed new ammeter gauge. Started tractor today and gauge is on zero what could it be sucker won’t move over to charge at all. Wish I new how to wire this thing maybe someone have wires crossed on gauge not sure. Might call a mobile mechanic to come out and throw an eye on it. Frustrating spending money for nothing

[Crimson Tim]

Do you have lights? If so, with the engine off and the lights on, will it show a draw?
If it is charging and running, but the battery is not discharged, there will be almost no current flowing.

Have you found the right wiring diagram for your tractor? They are available under Quicklinks above unless someone posts it for you first.

[Eugene]

Which alternator do you have - installed, single wire or 3 wire? Answer is gonna make a big difference in how the alternator is wired.

[Snuffdipper]

It’s 3 wire alternator. Haven’t installed the lights yet took them off to paint them. I’ll get that done next few days and try it see what happens

[indy61]

I agree with Crimson Tim. If the battery is fully charged and no draw than the gauge will have very little or no movement.