I will be updating my avionics on my Dakota. I will have a GNS480W, MX20 and Garmin 496 all for sale in about 2 weeks. I have asked that the avionics shop to label all the wires and print me off a wiring diagram for all the units. This way whom ever the purchaser is can wire it up themselves. All manuals and diagrams will come with the units. Let me know if you are interested and I can hand deliver the units or UPS them to your location.