Just a follow up. I bought the Roadmaster baseplate for the CRV, the sterling all terrain tow bar, easy brake, toad charge, and went with the extra bulb kit instead of diodes. The baseplate install was very straight forward and only took a few hours. I modified the 7 pin wiring harness so I could use the toad charge without having to run an extra wire from the Greyhawk back to the CRV as their is a charge line coming back to the greyhawk 7pin connector.
There is plenty of room in the CRV rear light housings for the extra bulb sockets, so that made things easy. The most difficult parts were in fabricating a mount for the easybrake controller and the toad charge components.
Also got the Protect-a-tow, a very nice product to save the toad from rich chips, turned out to be a good thing as we ran into some road construction that took us over loose gravel roads for about 15 miles on our trip.
We drug the CRV to Yellowstone, and back through the Tetons, the tow set up worked very well, the braking system worked well without customization to the settings and the toad battery stayed charged throughout the trip.