Worked on it some tonight..
If you saw the build on my chain-drive car, I had the control box up front. This time, I am going to tuck it in the rear this time. I am going to keep the brake servo in the same place as when I got it, and that does not leave a lot of room for other stuff up front.
Here is the trial fitting.
What you see, are the 2 on/off switches, as well as charging jacks for the battery pack.
