JackT

Thanks for the response, guys! Mark, I have read the document you posted the link to. That is where I encountered the references to the prior V-3 Modifications.

I recently discovered the "Modification Plus" manual that documents factory authorized fuel system modifications to 1973 240z. This manual refers a number of times to the prior "V-3 Modification Program." Is there a factory manual for the V-3 Modifications? I am specifically interested in finding a wiring diagram for the Relay A and Relay B fuel pump relays. Thanks!!!