Spectra provided all the parts and pieces for the installation of their watermaker down to the hose clamp and wire level. Everything was in the kit for the basic installation. We only bought a few special parts to adapt to our own unique plumbing configuration.
The feed pump module and controller were installed in the engine room on the aft bulkhead, starboard side, under a cockpit drain hose and the vent fan.
The pre-filter module was mounted to the left of the vent fan, and the accumulator was positioned above it. Positioning of these modules was not only driven by the location of the engine exhaust hose looping above (the black drum on the bottom right corner, there, is the muffler), and the engine room fan right smack in the middle of the bulkhead, but also by the requirement that the feed pump be within four feet of the waterline, and as low in the boat as possible. Stan managed to locate the feed pump right at the waterline.
The Spectra Clark Pump Intensifier was installed on the inside wall of the quarter berth (aka the garage), and the inlet filter module was placed on the aft bulkhead. Even if there had been room in the engine room for the Clark Pump, we couldn't have installed it there. The membrane in the intensifier can't withstand the engine's high heat.

After the components were installed, all of the hoses were run between the quarter berth, the engine room, and our existing water tanks. The product hose was tied into the existing water line at the 'T' between the tanks. This is where we can choose which tank to fill. Also, back in the quarter berth, there's a valve which lets us select whether to fill tanks or divert the water to a hose. From the hose we can fill the sun shower, a washdown bucket or a jerry can.
Finally, Stan, ace electrician, wired all of the components together and installed the control panel behind the nav station where its bright green read-out lights up the whole salon.