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Cattle Boards
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John Deere 4020 Electrical Problem
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<blockquote data-quote="Chuckie" data-source="post: 475744" data-attributes="member: 637"><p>If you want it to crank the best it can, change the batteries out for 2- 6 volts hooked up in series postive post to starter, ground to postive on other batt-and ground to side of tractor. Two 6 volts in series have more cranking amps.You definitely have a short drawing on the batteries. Another thing to keep in mind the old system was a postive ground and you are changing it over to a negative ground system.If you get everything doing right the two 12 volts will crank the tractor pretty good. With the batteries in series you double the cold cranking amps when you hook 2 batteries parallel you only get the cold cranking amps of the amount of both batt divided by 2 . I put a relay on side of the panel just behind the starter and below the steering wheel to run all current through so when you turn the key off you kill all current leaving the postive battery cable.</p></blockquote><p></p>
[QUOTE="Chuckie, post: 475744, member: 637"] If you want it to crank the best it can, change the batteries out for 2- 6 volts hooked up in series postive post to starter, ground to postive on other batt-and ground to side of tractor. Two 6 volts in series have more cranking amps.You definitely have a short drawing on the batteries. Another thing to keep in mind the old system was a postive ground and you are changing it over to a negative ground system.If you get everything doing right the two 12 volts will crank the tractor pretty good. With the batteries in series you double the cold cranking amps when you hook 2 batteries parallel you only get the cold cranking amps of the amount of both batt divided by 2 . I put a relay on side of the panel just behind the starter and below the steering wheel to run all current through so when you turn the key off you kill all current leaving the postive battery cable. [/QUOTE]
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John Deere 4020 Electrical Problem
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