Wiring harnesses are not provided and have to be built by the installer. The thermocouple wires are not provided for the EGT and CHT. I know the Garmin System is top of the line but very frustrating trying to figure out what is needed. Someone at Garmin should come up with a list of components needed and a master parts list with prices. I’m tired of hearing other pilots say, “You should have ordered Dynon, they come with everything�. Totally bogus!