The CJ3A Page Forum - CJ-3A wiring I wish some one had a wiring diagram of a CJ3A with a 6 Volt starter and a 12 Volt battery with wires going to Battery, Then, you can pull the rope wiring harness back out of your jeep, CJ-3A wiring Reply #70 - 07/26/12 at 14:26:11 12V wiring diagram - The CJ2A Page Forums - Page 1 Its time to start wiring things up. I've looked around and found quite a few wiring diagrams for stock 6v but none really for a 12V alternator set up. This is the diagram from cj-2a. I've changed it to my understanding but I'm sure there are some holes in it. Let me know what you think. Wiring Schematics | eWillys I created a post with a list of wiring schematics, but it was deleted somehow. This page provides a temporarily replacement. I’m sure I had links to where I found these, but I will have to relocate them. CJ-2A wiring Diagram. CJ-3A Wiring Diagram. 1956 CJ-3B Wiring Diagram. 1965 CJ-3B Wiring Diagram. 1972 CJ-5 Wiring Diagram. 1978 CJ-5 Wiring CJ-2A Wiring Willys CJ-2A Harness Wiring. Keyed coil under dash Standard coil on engine. 2-post Junction Block 3-post Junction Block. Horn on firewall Horn on fender. (16 ga.): Circuit Breaker output to dash light switch. Yellow - 1 Black tracer (16 ga.): Light Switch "A" terminal to Junction block lower terminal. 1948 Willys CJ2 Jeep re-wiring part 1 | Garp 1948 Willys CJ2 Jeep re-wiring part 1. Posted on September 3, there’s some sort of light on the dash I have no idea what is for, re-routed and connected correctly. I bought wire that matched the colors of the diagram, got a generic box o’ wiring connectors at the parts store and tore into it.