When I was setting up my Gerbing attire I was pondering putting the "Hers" controller in the Right side compartment in the backrest & the "His" in the lockable right hand compartment on the dash.
In the end I decided to go with the portable controllers & just stuck them in the pockets of our riding gear.
Here are a few pictures of how I set mine up.
1st is the Auxilary fuse panel that I wired them through
2nd is Her connection that I put in the Left side Compartment (where she wanted it)
3rd is My connection which was a BMW style in the false tank.
These setups make it easy to disconnect & just keep the Controllers in your pocket.