Description
Nothing’s more frustrating than not knowing what your charging system is doing, especially when you’re miles from the shop. If your old ammeter has stopped working or the needle bounces around like a nervous cat, you can’t tell if your alternator is charging properly or if you’re about to be walking back to the barn. This replacement ammeter gives you the reliable readings you need to keep working with confidence.
What You’re Getting
- 20-0-20 amp range that covers the charging needs of most Allis Chalmers tractors
- Clear, easy-to-read dial that shows both charge and discharge at a glance
- Direct replacement design that fits the existing dash opening without modifications
- Durable construction that handles the vibration and temperature swings of tractor work
- Standard wiring connections that hook up just like the original
Built for Real Farm Work
This ammeter is designed to fit a variety of Allis Chalmers tractors where monitoring your electrical system is crucial for reliable operation. Whether you’re running lights during long days, powering hydraulic pumps, or just keeping the battery topped off, this gauge tells you exactly what’s happening with your charging system so you can spot problems before they strand you.
Made to Last
Farm equipment gauges take a beating from constant vibration, temperature changes, and the occasional bump from tools or parts. This ammeter is built to handle it all with a robust case and reliable internal components that keep giving accurate readings season after season.
Good to Know
Installation is straightforward—disconnect the battery, remove the old gauge, and connect the new one using the same wire positions. The ammeter should read slightly positive during normal operation, showing your alternator is keeping up with electrical demands. If it consistently shows negative, your charging system needs attention before you end up with a dead battery.




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