GM 350 wire harness in a YJ - forums-road Oct 08, 2008When I put the 350 (carb) in my YJ I got the painless universal harness and I am so glad I did. Wiring up my jeep was the most intimidating part of my build for me, and the painless kit that I got made me feel much more comfortable about. For me it was well worth the money.Author: Diode Dynamics 350 swap wiring - Jeep Wrangler Forum Apr 12, 2016I am installing a 350 /sm465 from an 89 Silverado into my 91 yj Had (2.5) Here is a link to my build; https: What wires will I need to connect from the jeep into the Chevy Harness/ comp? Tack wire, power etc. I started to pull out some of the unwanted YJ wiring I cut it about 4" from the connector. I will pull the pins later.