We’re pretty much on the same thought process on that, on my bike I located the fan within a frontal air scoop that is used to direct air towards the rider from the opposite side on the fairing, and has a direction change device that keeps rain separate from the ram air. The fan sits on the floor of that plenum, and has the “mini” funnel outlet shape and adjoining 1″ ID hose leading on towards the alternator (in my case).
I used to have the ecm mounted out near the rear tire, and was in an area I had concerns about road splash etc, and the IP52 MS sealing rating in not extremely water tight. I relocated within a storage compartment under the seat, actually have the relay board, fuse panel, as well EDIS 4 module all residing in that area. Should the EDIS generate more heat that is reasonable I will relocate that up front near the coil pack (right in the air stream for cylinders).