I've got Rick's on my bike and it works fine, but any rec/reg off a modern bike will probably work, when the rec/reg on my Suzuki GS1000 failed, the guy at the local motorcycle wrecker just pulled one off a late model Honda and told me how to wire it in, and it worked fine. Find a good used one off a brand name bike that looks like it'll fit, and just wire it in. Cheers, Terry.