Allan Simpson

Hi, new to the forum and needing some help if possible. I have a Regard RUF 500 that had a cfmoto 500 engine but the previous owners decided to take it all apart and then left if for a few years and parts got lost. I have now got a Suzuki 500 engine from a quad fitted in but struggling with the wiring. I can't find a wiring diagram for the Regard and even the manufacturer doesn't respond. The major problem is the Regard doesn't appear to have a rectifier and whilst I can wire the stator to the new engine I have other wires I cannot trace to find out where they go. Anyone out there that could point me in the right direction. Happy to post pictures if it would help. Thanks Allan