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Cattle Boards
Trucks, Tractors & Machinery
John Deere 4020 Electrical Problem
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<blockquote data-quote="luke strawwalker" data-source="post: 474558" data-attributes="member: 7455"><p>Sounds like a bad regulator or isolation diode. Disconnect the battery cable and hook a test light between the battery post and cable end. The test light should not be lit with the switch off. If it is SOMETHING is drawing power and that is killing your batteries. Just disconnect stuff until the light goes out and when it does you found your culprit. Good luck! OL JR <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="luke strawwalker, post: 474558, member: 7455"] Sounds like a bad regulator or isolation diode. Disconnect the battery cable and hook a test light between the battery post and cable end. The test light should not be lit with the switch off. If it is SOMETHING is drawing power and that is killing your batteries. Just disconnect stuff until the light goes out and when it does you found your culprit. Good luck! OL JR :) [/QUOTE]
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John Deere 4020 Electrical Problem
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