I found the answer doing a search, thanks Greg! Here is what he said, and it worked!... ...
Greg Boardman
Registered: Apr 2001
Location: TwentyNine Palms, CA
Posts: 1003
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Check the small blue wire on the steering colum loom. Thats the one I used..... Greg
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Hers: 2003 3500 QC, 2WD, DRW, 5 speed, guages, Edge EZ
2003 5500 QC, 5 Speed, 4X4, DRW, Guages, Bullydog Torque Dog, Airaid filter, Mag diff cover, PacBrake, 5" exhaust
Turnoverball.com hitch in both trucks