I'm towing my manual transmission Mini cooper S with my motorhome. The motorhome has a round 6 blade with round center pin type plug. The car has a smaller round plug with 5 pins and a round center pin type plug. I have a power spiral cable which connects between the motorhome and to the Mini.
I've never had a braking system and figured it was time to get "with the program" so I purchased a sit on the drivers floor/push the peddle type system ( Blue Ox patriot ).
I found out today during a "shakedown" drive that the battery in the Mini (brand new a week ago) is not really husky enough to run the Patriot without running it down fairly quickly. This didn't really surprise me as the Mini battery is only 420 CCA.
So now, I need to understand what is the best way to get 12v power into the interior of the mini that's either (1) fed directly from the motorhome and bi-pass the mini electrical system completely to a new 12V socket under the seat, or (2) run a charging line/wire from the motorhome that recharges the Mini battery if I plug into one of the Mini's standard 12V sockets.
Is there a preferred method of the 2 shown above? Has anyone had this issue with a Mini ( not really sure that theres anything unique about a Mini here), if so, how did you solve it?
Any help or suggestion will be appreciated.