Looking to fit a Fiat voltage regulator into my '82 Special, which came with the integrated regulator/rectifier, and came up with this as a way to plug it into the existing harness conveniently. Mid-January weather has come to SE MI in early Nov, so haven't had a chance yet to see if it works, but these pic's show the general idea. This would only work if OEM air boxes have been removed and replaced with other filters. The Fiat regulator attaches to a 6mm x 40 bolt threaded through from the backside of the nut at the bottom of the battery box. I replaced the connector that came on the regulator with a Cycle Terminals 2.8mm 2-pin locking connector. The green and brown leads were salvaged from the harness of a really cheap eBay OEM regulator; they replace the same-color leads coming up to the 8-pin connector from the original r/r that remains attached to the central frame downtube and still has to do its AC-to-DC rectifying job. Because the battery box is electrically isolated from the frame, a ground lead is needed from the regulator to the frame; I took that up to the main frame ground where the battery is grounded. The whole setup fits nicely behind the side cover with enough clearance for some air flow over the regulator - the side cover attaches to the hex-shaped spacer you see in the "mock-fitting" pic with the button hex screw. Hope it all works, but Hell (we have a Hell, MI, you know) has frozen over here for awhile - may be next Spring before I know for sure. If it doesn't, it's easily reversible.