Changing res. on Egret II

Hello. Anyone know how to go about changing an Egret II over to medium resolution? I'm totally lost.

Eh, looks like I figured it out. For anyone else who was wondering the same thing, there's a jumper with four wires on the monitor chassis that you have to move. Its impossible to get to or even see without removing the chassis from the frame. Once its removed, it takes about 2 seconds.

It's also the same on the Sega New Astro City cabinets as they and the Egret 2's both use the same Nanao 29" Dual Res monitors.
Don't touch the anode/suction cup, you'll feel it.