Garmin 430w installation with altimatic IIIb autopilot
I am installing a Garmin 430w replacing a Narco 120, KNS 80 and a garmin 155xl. When I began removing the above avionics, all of the wires went to the right to a blue box filled with relays. I removed all of that, but am not sure how the new 430w provides input to the autopilot. Any suggestions? I have the altimatic III manuals and the manuals for each of the other units, but cannot determine where to make the connection. When I installed a Trutrak it was an easy connection of an rs232 and 429 set of wires. Not sure how it works with the altimatic.
Scott Brooksby, CFII, A&P, IA