82 k10 chargin issues

hey i have an 82 k10 pickup with a little problem i recently put a new tranny in it and ever sence the truck will die a little bit after running it then i have to charge the batteries to start it again its like the
alternator is not chraging during running but i have used two brand new alternators PLEASE HELP
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start your truck ,use a volt meter to see what the charge is (should be 14.8) if not... you probably pinched a wire that runs down along the transmission or blew a fuse. Another way to test to see if the alternator is coming on is get a 2 wire plug from the wreckers like yours splice the 2 together and run 12 volts to it.. see if it charges then. Others may have easier methods ... I'm just trying to help with what has worked for me..I am no means a mechanic..

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For a altenator to produce output it has to have field voltage applied to it. Without it there will be zero output. It is removed when you shut truck off to prevent battery drain because the field current draw would kill battery in less than 24 hrs. Check for 12 volt fiel power being applied when you turn ignition on to run position. It will be in the small connector that plugs into it.
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----------------- TheSnoMan.com
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