Sadly I was more interested in getting everything done than taking pictures, sorry.
The accumulator tank I added is
this Shurflo one (Amazon). It isn't that big but will get the job done.
I used the
pump silencer kit to hook up the accumulator--made for about a 10 minute job: Disconnect the output of the pump, connect one of the silencer hoses, hook the other end to the accumulator, use the included male-male fitting to hook the other silencer hose to the disconnected water line on the output of the pump, hook the other end of that hose to the other side of the accumulator, mount accumulator...done.
Yeah I've had an accumulator on our last 3 RV's now..just getting around to putting one on the Axis (The Axis is now also the 3rd RV that we've had at least one fantastic fan on it--love those things).