Theoretically that should work just fine.
But keep in mind you have to split all five lines......
RED, GREEN, BLUE, SYNC, and GROUND.
At
worst you'll need to boost the signal a bit with something like Ultimarcs videoamp. (you wouldn't need the vga cable it comes with)
http://www.ultimarc.com/vidamp.htmlHe has them without the vga port also, but you have to ask specifcally for it.
You would run the JAMMA leads into the input of the amp and then split the output to each monitor.
But order it through someone like divemaster127 if you're in the US.
I'd try it without
first to see if the signal is strong enough without it.