someotherguy
+1y
Doubt you'll find a ready-made harness specific to that truck brand new. As far as connectors, you can use Rockauto's site, NAPA's, etc. to figure out pigtail part #'s then I strongly suggest you go look 'em up on both Amazon and eBay to save some bucks, some will still be expensive, but nothing like what you'd pay from the regular parts houses. They're goddam proud of some of them.
And if it were me I'd be soldering and heat-shrinking all the connections, screw crimp connectors. And use the good heat shrink like you score at real electronics places, not Radio Shack's plasticy junk. The good stuff has a rubber-like consistency and shrinks better.
Richard