So, ordered a couple of the brackets for the F3. The one used by default in power unit. But, not installed in the dummy unit. Although, there is a place to mount one. I finally finished the upgrade. I opted to moved the sound from the motored unit to the dummy unit.
1) Swap bodies between Powered and dummy - the motored unit has the potentiometer on the roof for sound volume control.
2) Drill one hole in filler plate on powered frame and mount ERR AC Commander. Install per ERR manual.
( I removed the speaker from the powered A unit well area) But, this speaker is really not the correct size to mount in the upper body area of the F3 shell) So, I could have just left it in there
Dummy Unit
1) Mounted the speaker in the body with mounting plate and screw. (ordered from Lionel)
2) Added filler plate in the dummy A well area. (ordered from lionel )
3) Remove potentiometer from ERR sound board. Wired in the Lionel roof mounted pot to the
Board.
4) Mounted ERR Dummy commander with softest technology and the ERR sound board to the installed plate in the dummy with double sided tape. ( I didn't want to cut the chassis for the program switches that were filled in the dummy casting. I had planned to use a old LCRX board. But, the ERR dummy commander is a much better option)
Wired to completion....ready to roll....the nice part!
There are already capacitors installed across the motors on these unit, so, that saves a step.