I wish I'd taken photos of the foam-board template I made, and of the pedestal with the hole drilled before I re-installed the wheel and the motor. However, it's easy for you to construct one, if you have a drawing compass: draw a line with cross-ticks 6.00 inches apart; measure the diameter of your wheel bezel, at the base; draw a circle of that diameter on one cross-tick, and cut that circle out; make a small hole, just big enough for whatever marker you plan to use, at the other cross-tick. Fit the bezel hole over the wheel-bezel, and any mark you make through the other hole will be 6.00" from the center of the wheel.
This shows the pedestal and wheel-drive from the port side and from the helmsman's seat. You can see the helm-clutch lever below the wheel. I found this was convenient and didn't get in the way when I step around the helm; more important, it doesn't interfere with the throttle quadrant on the starboard side of the pedestal. (Avoiding that interference is the reason I put the motor near the port side of the pedestal.)
I also had to move the throttle quadrant, so that it was out of the way of the drive-ring; depending on your throttle position, you may need to do the same.
This is a closer view of the back of the wheel-drive motor. You can see the back of the wheel-drive ring, and the little square-shouldered knob to the right of the motor is the clutch setting.
This is a photo of the way I secured the motor. As you can see, I left a bit less than an inch between the edge of the pedestal and the edge of the hole. I used two through-bolts (you can see the nylock nuts) with wide, thick nylon fender-washers, set "a little too close" to the motor - this let me trim the washers just a little, and get a tight fit on either side of the motor. I put 1/8" foam weatherstripping tape around the motor before I installed it. (The black object below the motor is my tachometer; that was installed by the dealer who first sold Bossa Nova to her previous owner.)
I don't know where you're planning to install the control head (display and pushbuttons); mine is on the port-side seat back, close at hand for me, in a place where guests aren't likely to be sitting.
You do need the controls in easy reach. I suppose you could put it on top of the pedestal, if you don't have other stuff there to interfere (as I do - the white bag is my compass, and the black ball behind it is the RAM mount for my GPS/chartplotter). Or you could put it on the port side of the pedestal, but you'd have to shift over to port to see the display.
Hope this helps!
. And after following everyone's install questions for about 2 years now, I thought that when It was ready for my install, I would know exactly what I wanted to do. Not the case.
