Here are some additions to your wiring harnesses for items that you are not using now, but will make system expansion / upgrade easier should you someday choose. You might find a few of them useful to you. Just clearly label them and tuck them out of the way. A lot easier to add them now rather than breaking into an already built harness at a later date.
Not sure if the 430 uses all of these, but these have potential to be very useful if you upgrade to a simple slide in replacement Avidyne 440 someday:
On P4001
- pins 15 + 72 can be wired to be a second power input from a second power bus, and unit will seek power from whichever bus is alive.
- Pin pairs 56 & 57, 58 & 59, 41 & 42, and 54 & 55. These are RS 232 lines 1 thru 4. I'm using RS232 1 to drive the steering on my standby attitude indicator, a Garmin G5. If all Dynon screens go dark, I can still follow my IFR GPS nav course on my SAI.
- pins 52 & 53 are the Hi/LO for audio alerts generated by the navigator for altitude, terrain, obstacles, etc. These are distinct warnings from whatever Skyview may or may not generate. I use the 500 ft AGL call to trigger one more additional last chance check of gear, flaps, and brakes.
- pins 39 & 40 are Hi/LO for additional lighting options
- pin 79 is another additional lighting option
On P4002
- pin 15. Remote COM frequency transfer / flip flop
On P4006
- pin pair 7 & 34 are Hi/LO to let you listen to audio of whatever frequency is tuned in your COM standby window
Enjoy the build.
