Does anyone know the location of the CAN bus on this rig?(controller area network)

I am having extreme problems with my 2009 Fleetwood Pulse 24D. It has stranded me twice in remote places requiring hundred mile tows.

Driving on a two lane road an 18 wheeled truck went by us in the opposite lane causing the bus to move due to wind load. It immediately lit every light in the dash (check engine, ESP, Wheel spin etc) and went into limp mode. The initial codes were for "output shaft speed, Wheel sensor speed"

I have had it at three shops including 9 weeks at Mercedes of South Orlando. They REFUSED TO WORK ON IT AS IT IS TOO OLD!!!  They did read the codes which mostly relate to the CAN bus (No CAN message from control unit Engine)(Yaw rate, lateral and longitudinal acceleration sensor)

I have located an experienced Mercedes tech guy to work on it but we can't find the CAN bus.

Any information would be greatly appreciated!

Bonneville Don