First of all its the Generator NOT the Voltage Regulator that gets Polarized.
1. Did I destroy the "pricey" USA made voltage regulator by installing it on a tractor with incorrect wiring ? I realize now that the "L" terminal on the regulator is the source to supply voltage for lights or ignition. Would running power from the amp meter to the "L" terminal cause damage to the regulator or generator
I cant say how the incorrect wiring was configured so cant answer that question HOWEVER one way to harm a Voltage Regulator is if the genny were incorrectly polarized and you start the tractor.
I doubt running power from the L terminal to the ammeter damaged the Voltage Regulator
2. Why did the first regulator I installed a few years back, work for a while and then give out instead of just frying like this last one ??
If a VR is designed specifically for one ground and you use it at the opposite the contacts can be harmed. The Delco literature Bob posted explains some of that. A VR needs a good ground to work, I just cant say why yours fryed.
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Today's Featured Article - Storing Your Tractor - by Staff. If your tractor is going to be stored for any length of time, a few precautionary measures are helpful in preserving various parts, also in avoiding future difficulty. Store tractor under cover. If impossible to place tractor under cover, be sure to cover air stack and exhaust pipe. Drain radiator and engine block. To avoid gum content collections, drain both fuel tanks and carburetor. Leave radiator and fuel caps slightly loose to protect gaskets. Block tractor up to remove weight from tires and to keep tires from contact with moist floor.
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