Here you go, my Mopar parts man, Artie McAnany at Fairway Dodge in Ridgewood, NJ got the answer you're looking for.
The plug is mopar p/n 4400809
The terminals that fit inside the plug are mopar p/n 4274665 and you'll need two of them.
You're gonna have to crimp/solder your own pigtails to these terminals and put it together as a unit yourself, but it doesn't get better than this.
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Chris Timochko
AUTO WURKS DIESEL R&D TEAM
1997 5sp 4X4, Espar Heater, A. W. D. HX40 turbo, ATS 3pc Manifold, BD 4" Brake, Marine Compression, A. W. D. Custom Tuned Injection Pump, A. W. D. Intercooler, A. W. D. 370B Injection Nozzles, Delivery Valves, Governor & AFC Spring Kit, Psychotty Air, A. W. D. Water Injection, NOS Diesel Kit, A. W. D. 6" Chrome Exhaust System, BD No Smoke Valet Switch, McLeod Dual Disc Clutch, Mag-Hytec Rear Cover, Cummins Chrome Kit, Optima Red Tops, Hadley Bully Horns, Hurst Line Loc, Goodyear Wrangler AT/S 305/70/16s.