Credit this for this guide goes to Jscott23 on the GMT400 forum here is a link to his 93 c3500 build thread http://www.gmt400.com/threads/1993-chevrolet-c3500-crew-cab-restoration-cummins-build.35784/
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$DIY Guide wiring a 12v Cummins /47RE tranmissions standalone with the dodge PCM
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