I located and mounted the TCW power stabilizer on the Co-pilot side behind the Multi-function Flight Display (MFD). I placed nut plates behind the sub panel so it attaches with four screws. The remote voltage regulator was a little more difficult. It had to be mounted in the cabin away from heat, water and vibration. I mounted it on the backside of the sub-panel in vibration isolators. The regulator stud will be grounded to the horizontal ground bar I installed. I also did some noodling on where to mount the GPS for my Grand Rapids Tech Mini-X backup EFIS. MY current thought is to run the antenna wire through the glare-screen support tube and locate it above the fuselage. Need more research.