Gentex Onstar Mirror Wiring

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Hello H2'ers,

I have an installer nearing completion on a Pioneer Nav system install who has run into a little wiring puzzle. I purchased a Gentex Model GNTX-261 mirror with Onstar out of a 2002 Chevy Trailblazer so as to move the Onstar controls from the dash to the mirror, thereby using the 1/2 DIN slot for the DVD player. So far everything is wired EXCEPT for the mirror's Onstar controls. Of course, the wiring color-coding differs between the in-dash Onstar unit and the mirror's input wiring. If someone out there has a "schematic" or solution for wiring the mirror, please post ASAP so I can get my rig back before tomorrow's Gilmer outing!!!

Thanks for any help forthcoming.