2004 GMC Sierra 1500 Instrument Cluster eletrical schematic?

[RussellReal]

I recently replaced all the LEDs in the instrument cluster with blue LEDs. All is well, however, while doing my repair/upgrade..... I well, uh, misplaced the tripometer push button thingy, so now there is a hole straight through the whole cluster, obviously terminating at the board where the momentary switch is. I'd like to see an electrical schematic so I can install a momentary switch directly to the acrylic plastic cover. Either that or does anyone have a 3d model I can use to 3d print a button thingy so I can fix this ugly hole.