I'd loose the switch from the '98 (sell it in the classifieds section or on eBay... . ) and get the updated headlight switch for your truck.
The updated switch comes with all sorts of neat stuff to upgrade the wiring and includes a relay to help spread the load off all the lights in the truck... .
I don't have a part #... . but Chrysler didn't hit the debit card too bad when I bought mine a year or two ago.
It took some time to solder up everything, but it was worth it after seeing one OEM headlight switch melt and nearly light my truck on fire.
Search around on this site and/or dodgeram.org - I think there's a TSB that describes the fix and includes part #'s.
Matt