Posted by John T on September 23, 2010 at 04:44:04 from (66.244.97.31):
In Reply to: Farmall A generator posted by Dahlin on September 23, 2010 at 04:20:15:
NOOOOOO you dont drain the battery, its still a battery with a + and a - terminal REGARDLESS which post just happens to be bonded to a huge chunk of rusty old iron......
A genny can still charge a battery, again REGARDLESS which post is tied to the tractors frame and whether one uses that frame as a return current carrier wired to the + or - battery post.....
That being said, if you want to reverse battery polarity by changing which post you tie to frame ground ( + or -) all you do is reverse the battery THEN BEFOREEEEEEEEEE YOU START THE TRACTOR POLARIZE THE GENNY by using a lil jumper wire etc to momentarily flash/jump from the BAT terminal on a Cutout Relay or a Voltage Regulator over to its GEN/ARM terminal and you should get a spark. THAT ANSWERS YOUR QUESTION YESSSSSSSS YOU SWITCH GENNY POLARITY BY RE POLARIZING IT AS ABOVE
If it has a working ammeter (and you change battery polarity) its leads need swapped or else it reads bass ackwards.
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