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Farmall & IHC Tractors Discussion Board

Re: Ammeter wiring


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Posted by John T on September 14, 2007 at 13:13:48 from (66.244.83.147):

In Reply to: Ammeter wiring posted by Farm130 on September 14, 2007 at 11:15:36:

Farm, To add just a bit to Bobs advice just in case you werent aware, theres usually ONLY ONE wire on what I call the ammeters SUPPLY terminal and thats its hot battery voltage feed usually off the battery/starter where the big ungrounded battery cable attaches to the starter switch or solenoid. Its other LOAD terminal is what wires to the BAT terminal on a Voltge Regulator or Cutout Relay PLUS feeds battery voltage to the lights n ignition. Therefore, theres often ONE wire on the Supply Side and TWO over on its other Load side, so if she registers bass ackwards do the side to side wire swap as Bob told ya.

On some of the older automotive Negative ground system ammeters the labeling convention was + = Supply terminal (to + battery post) and - = Load terminal wired to VR and switches. If such an ammeter was used on Pos ground the - goes to battery and + would feed switches and BAT on VR NO WARRANTY HOWEVER LOL Like Bob noted there may not be any labels at all???

John T


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