You need to connect the BAT wire (and "L" wire if it has one)from your original voltage regulator to the alternator BAT stud. That way the alternators output goes through the original ammeter to give you a working charge indicator. Connecting the alternator output directly to the battery will give you no way of knowing if your alternator is working unless you add a voltmeter to the tractor.
Dont install larger than a 37 amp alternator. A larger "1 wire" alternator like the 61 or 72 amp model may overload your wiring harness and require almost twice as much rpm to excite as a 37 amp "1 wire" alternator.
The other regulator wires can just be taped up, as they are not needed.
This post was edited by Jon Hagen at 19:18:52 02/06/14.
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