Re: 12 V Coversion Kit

Posted by John T on September 16, 2005 at 15:56:58 from (66.244.90.98):

In Reply to: 12 V Coversion Kit posted by The Hawk on September 16, 2005 at 13:39:26:

Hawk, I have no idea about those instructions you speak of, but can explain the theory to you which may or may not help??????

Most alternators use Negative ground but since Im not sure of what you have I will use generic terminology.

The SUPPLY side of the ammeter usually has but ONE WIRE and thats the main hot battery voltage feed which often wires to the starter solenoids input/supply (NOT side to starter) post where the big battery cable is attached. It could be wired direct to the hot ungrounded battery post, but its usually fed off the starter solenoids hot (NOT to starter) terminal.

The ammeters other LOAD side (often 2 wires or more) is what supplies voltage to switches n lights n ignition PLUS wires to the big main BAT terminal on the Alternator. BOTH sides of the ammeter ALWAYS read hot battery voltage, therefore, any wires off either terminal, including the one to BAT on the alternator, ALWAYS HAVE HOT BATTERY VOLTAGE.

If the ammeter were wired backards it would read charge for discharge and discharge for charge. If its correct with the tractor NOT running if you switch on lights or ignition it should swing to - discharge.

Clear as mud?????

John T, retired electrical engineer

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