Definitely don't swap the pins! The pins that remain are for your "key in ignition" sensor. DC stopped hooking up the halo light in the Rams and Durango's starting in the year 2000. The central timing control module use to control this feature but no longer has the connection. What you will have to do is tap into the overhead dome light. The easiest location is behind the driver's A-pillar. Do a search on "Halo light" for more info. If that doesn't help you out, feel free to email me. Isn't that a bummer that the truck is broke from the start?
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David Dressler
2001 Driftwood 3500 Quad Cab 4x4, 155 inch WB, HO Cummins (ETH), 6-Speed (DEE), SLT+, 3. 54 LSD, Camper Special, Trailer Tow, Heated Leather, Sliding Window, Jacob's E-Brake, Rhino Liner, VDO Vision (pyro, boost, engine + diff. temp. ), Weather Guard Diamond Plate Saddle Box, Tork Lift camper tie-downs, Mag-Hytec, Mopar Tow Hooks, AND functional Halo light!
Bigfoot 3000 10. 11 Slide-in Camper. "Do it in a Dually"