Just had a "Pinshaker" shaker motor installed at the York pinball show by robgo777 .
Gotta say what a huge difference it makes to game play. It's hooked up the the (Space) (Shuttle) flashers so will run when locking a ball or hitting the center ramp. I now have it running with the bell also. So it integrates with game play very well.
As far as the installation went. It's very simple. Since this was the first system 9 he did he didn't have the correct plug for the 110 line so just plugged it into the service outlet. two small jumper boards were installed at J12 and J19. Then a small controller board was added in the backbox. Finally Shaker motor itself was installed. One thing to note was with the system 9 bottom board of the cap is only 1/4". The T nuts that push up though to mount the shaker are about 5/8" Since we were installing at the show we just turned them upside down for temporary use. Permanent fix would be to mount a piece of 1/2" thick plywood between the motor and bottom board.
PS. Yeah I know I need to get a hard top for it.