OK, I'm getting ready to order the parts for these kits.
This will be a relay that lives under the seat, with the rest of the electrics, and a handful of little pre-crimped jumper pieces that you can origami together on a cold winter afternoon, then mount in your CB750. The object here is to bypass the heavy electrical loads on the aftermarket keyswitches we're all suffering from, which only have 8 amp contacts in them (and 20 AWG feed wires). These light-duty switches are intended to run CB200 and CB350 Hondas, but someone is adding CB750 connectors to them and selling them to fit these bikes, with short-lived results.
This "kit" will install something like the picture below, in its extravagant form. That form included me running a whole extra wire (the ORANGE one) to the headlight to remove most of the load from the electrical harness. I did this to see how much difference it made between using just the bike's wires and using the extra wire: the difference was about 0.25 volt improvement up front, which made a brighter headlight and hotter spark at the coils. Later, I added another GREEN wire between the headlight and the underseat ground, and was rewarded with a total 0.45 volt improvement up front!
I'll post a price for the kit after I get all the parts on the bench: it should be less than $25. I'm buying 100 each of the various connectors, 20 relays, and 50 feet of the various wire colors, to make 20 kits.
