AFS Pilot harness vs VSGVII harness

[NoahF]

Purchased a VSGVII harness quite a while before the AFS-Pilot was announced. Any modifications required to make this harness work with the AFS-Pilot & 4500?

[Trevor Conroy]

No modifications are required, however you will probably want to get the autopilot sent to TruTrak for a software update just before you are ready to start flying.

[TrutrakTech]

One quick comment, depending on who made it and when the harness was made, the RS232 Tx line from the AP to the EFIS may not be there. It's pin 7 on the AP.

[tomhanaway]

OK,
Didn't see this on any of the schematics. So Pin 7 of AFS/TT autopilot head is a serial TX and can go to any of the free serial RX connections on the EF or EE efis unit?
Thanks,
Tom Hanaway

[NoahF]

My harness was built by SteinAir about 2 years ago, and contains the following wires coming out of the autopilot head connector:

white/black - Control wheel switch engage / disengage
blue - from GPS receiver (Primary serial input)
white - Aux RS-232 output (labeled future expansion)
green - Aux RS-232 input (labeled future expansion)
orange - ARINC-A (GPSS Option only)
yellow - ARINC-B (GPSS Option only)
yellow loop - cut for pitch servo reverse
red +12V
black - Ground

So given that this harness contains the white and green wires, am I correct that this harness has full AFS-Pilot functionality and is identical to a harness if purchased today for this purpose and needs no modification prior to being put in service??

[Trevor Conroy]

Noah, you will not need the 'AUX RS-232 OUTPUT'. While Lucas is correct about pin 7, we are not using it at this time.