Wiring seems to be one of those things you get or you don't. Wiring has never been a problem for me. Learned how to braze and solder working HVAC but did very little welding. Not sure I care to even learn at this stage of my life. but. Finding a welder needing wiring would be prefer working a trade.
Unless you know wiring or know someone local who does would stick with OEM wiring with a known year month. Otherwise help on the internet is a lot more complicated with aftermarket harness.