swappin out my stock dash for a 2000 model dash. its already chopped and cut to fit. its in my friends 90 model truck.. alll the wiring harness is gone from his truck, but i know all my gauges and switches have different pluggins. so my question is, if i snag a wiring harness to fit the dash, will i get lucky enough to plug it up to my truck or will i have to cut splice and chase down all the wires to make it work???? just need to be steered in the easiest direction.. thanks