This Avionics shop did a complete cockpit makeover in my Mooney M20C. Installed an Aspen 2500 suite, L3 9000 ADS-B and rewired the entire aircraft. Everything worked right out of install. When you find an outstanding avionics guy like Doug Rupp you make sure everyone knows!  This is a very professional shop with reasonable pricing. I'll never go anywhere else for my avionics support. You will not be disappointed.