Looking for Farmall 230 info

Hello All

I've had great success on this site for my cub, now I'm looking to help my friend with his 230.

Are there any online manuals? Most importantly would be the wiring diagram for a 6v positive ground system.

Thanks in advance.

Parts manual is online at caseih.com. The wiring diagram is basically the same as a Cub with voltage regulator.

Al