Hello Rob, another canuck! Welcome to the Classic Cougar Forums! I wish there was such a place, but it seems you're best bet would be a service manual. The manual for my 67 has a bunch of diagrams at the back. You can also inquire at the parts vendors (in the "links" section of the home page) for a booklet on wiring diagrams for your 68. Not much help, but that's all I have.