Servonaut M220 and SMT help

[Kaf343]

So I just bought a Servonaut M220 and a SMT for my Stahl 922 excavator. I installed both controllers, I believe there both working right but want to be sure. I was not able to find a wiring diagram on Servonaut's site or anywhere else. I have sound when moving forward and in reverse and steering. I connected the +/- wires, the four drive motor wires and the two servo leads on the M220. On the SMT I connected the +/- wires, the speaker wires, the horn lead to aux1, and the gas lead to the M220 sound terminal.

Should I be connecting anything else?

Ric also sold me a double battle switch to control the hydraulic pump, not sure how to wire that though.

Any help would be appreciated.