New Wiring Harnesses M38a1 | ECJ5 Mar 14, 2017New Wiring Harnesses M38a1. Discussion in 'Early CJ-5 and CJ-6 Tech' started by JHot, Feb 23, 2017. Feb 23, 2017 My jeep is a 1952 m38a1. I've researching about wire harnesses and everyone on here recommended ez wiring. But my question is should I go with the 12 Circuit kit or a 20 circuit kit. Looking at that wiring harness you'd never70 Cj5 V6 New Wiring Harness Issues | ECJ5Mar 12, 2019Which New Wiring Harness? | ECJ5Jan 21, 201924 volt to 12 volt swap M38A1 | ECJ5Mar 29, 2009ez-wiring diagram cj5 m38a1 | ECJ5Sep 02, 2007See more results m38a1 wiring harness | eBay 23 product ratings - Jeep Willys M38 M38A1 NOS Instrument panel Spider Wiring Harness G-740 G-758 $37 Trending at $49 Trending price is based on prices over last 90 days.