Well, pbui (priuschat member) had a very good suggestion, get a diagram up. So, I did this over lunch. Please poke holes in it so I can improve it.
The main problem I've been talking about is the 5v and 12v possible power supplies going to the arduino. I drew in the current fix which is to put diodes on each input supply. But, there is still concern about using them and possible induction problems through the chassis with the 110V.
CL = celllog
816 = opto isolator
SSR = solid state relay
