Those both look like the "improved RR" I installed on my bike shortly after buying it. I moved it outside of the frame because you are correct abut the heat being amajor reason for the initial modification. I am unable to confirm that either the RR20 or the RR26 is a Mosfet. (I really didn't find a working link.) If they are then plug and play is great. When I installed my Mosfet I did cut the stator wires where they ended and then installed the new weather proof ends that came with the Mosfet. 3 from the stator and 1 for the ground then 1 for power to the battery. (5 total). Now I have 10 gauge wires going from the stator to the battery. The only small wires are from the factory. I kept the small gauge stock wires wrapped up and tied out of the way, just because. Many of the stock connectors are toast now and if you need to replace the connector is it literally 6 of one or 5 of another.
The initial mod called for using the Shindigen Mosfet. 10+ years go that brand was the real key to improving the system. I believe now other companies may be able to manufacture Mosfet type regulators. (Many members found even a used Shindigen FH020AA managed their power so well they could add heated grips, more lights and even music without being concerned about "balancing" the load and saving the stator.) The most important part of this mod is to eliminate the stock designed rectifier/regulator with a much improved technology to save the stator.
If the RR20 and RR26 are Mosfet type, everything you state is right on point for improving the electrical system of these bikes. It would even make replacing the aging connector a cinch.
The initial mod called for using the Shindigen Mosfet. 10+ years go that brand was the real key to improving the system. I believe now other companies may be able to manufacture Mosfet type regulators. (Many members found even a used Shindigen FH020AA managed their power so well they could add heated grips, more lights and even music without being concerned about "balancing" the load and saving the stator.) The most important part of this mod is to eliminate the stock designed rectifier/regulator with a much improved technology to save the stator.
If the RR20 and RR26 are Mosfet type, everything you state is right on point for improving the electrical system of these bikes. It would even make replacing the aging connector a cinch.