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|Dean in Indiana||I have had the altenator checked out and replace the regulator (all the goop had melted out of the old one) and the light will start out bright, then go dim as I increase the rpms but it will never go completely out. Any help would be greatly appreciated. Thanks in advance.
|Mac||How the charging light works is when you switch on the key you send power to one side of the lamp,the other side of the lamp has a light wire that goes to the alternator to make earth,the earth is made through the alternator brushes,when you start the engine the alternator starts proudcing power the earth is broken and the light will go out,if any part of the wire is touching ground between the lamp and alternator the lamp would remain on,with the engine stopped take off the light wire from the alternator and switch on the key,the lamp should not light,if it does it is grounding somewhere,if it does not light it would point to a fault in the alternator,what I have said above only applies to an alternator with a built in regulator
|Dean in Indiana||Thanks for the detailed information Mac, but I have an external regulator.
|rs||Here's one we learned the hard way. Those tractors come with either a 51 amp or 32 amp alternator. If you put a 32 amp on a tractor that came with a 51 amp then the light will not go out unless it is reving high rpm's.