Robotron wiring continued

Once again I got some help from Larry, who has restored many a Robotron cab.

[...] The best way to do this is to leave all the original PS equipment in the cab. Tap the AC for the Switching PS from the AC wiring going to the monitor. This way the Switching PS will go on and off with the cabinet power switch. [...] Leave the power for the coin door lights connected to the original linear power pcb also. 

You'll also want to tie the GND pin in the DC section of the Switching PS to one of the existing Ground wires in the cabinet otherwise the controls won't work (need to share a common ground). 

I'm hoping I will have time to test it this weekend.