Awesome! 
You won’t regret the tires! 
Just got my lacroix mod (Gerry) on (2) D100s. Huge upgrade! If you have any issues with them let me know. Initially it did not detect the two together. Below was my solution.
I suggest to keep the switches separate on each d100s before powering any on. If initially powered together, it would not detect both D100s. I also had to split the power switch like @zero_ads. Left no extra can for Minnie so I used a metr pro instead as well. I have to check if after detecting 4wd, I could piggyback the can on the Minnie. I’m sure I could, as I gave up on the Minnie because I could not detect both with it on. 
This is how I got it to work after many tries. Keep both switches separate on first detection. After powering first d100s on, wait a second and power the second. Boom. It detects 4wd in that order. Not sure why. Then I split the power switch and was able to power them on and off together.
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