My son and I are student pilots who just bought an old C172F with a King KMA-12B marker/audio tied to a King KR86 ADF with a KI-214 indicator.  We have no operators manuals for them and nothing is contained in the plane's book. Our flight instructors are having a hard time explaining their operation to us and they would rather use the panel mount Garmin 250xl. However, my son is 17 and headed to a college aviation program next year so I want him to learn things right. The books we have for our radio, the garmin, and other equipment has helped us a lot. Bendix/King/Honeywell seem to only have installation manuals on their site.  Anybody have a copy of these manuals or a PDF file on them?  We would be willing to pay a reasonable charge.  Thanks, Joe