These instructions are really for KV-27S42.
Enabling 3 video inputs
23 and saving this to memory, allows to enable 3 video inputs.
Adding the 2nd Video input
Control shift using a physical switch (independent of the below inputs)
Video 1 is routed for RGB and S-Video
S-Video is controlled using a separate switch to cutoff remote blanking
Switch using the remote
When Video 1 is switched and blanking is on, turn on the Video Led in the front
Wire the same Audio L & R for Video 1 and Video 2.
Video 2 is routed to component and composite input
Composite is controlled using a separate switch to cutoff remote blanking
Video 2 is switched to component using remote when switch is turned on
Video 3 composite input is routed to the front (future). Video 3 doesn't support S-Video.