Real Boeing 737 yoke handle wiring

[Westozy]

Hi all,
I have just wired my pair of real Boeing yokes and thought I would share the wiring code for anyone else who is going to install real yokes. The real Boeing wiring harness contains 14 wires, I found that two were redundant or spare.

1 ELEVATOR TRIM ROCKER SWITCHES (Both switches must be operated together to work)
Boeing wiring harness colors
White/Red = Common
White/Orange = Trim "Down"
White/Black/Orange = Trim "Up"
White/Violet = Makes with White/Red - both directions *Not used in my sim*

2 PTT ROCKER SWITCH
Boeing wiring harness colors
White/Black/Brown = Common
White/Grey = Intercom (Bottom trigger)
White/Red/Black = Mic (Top trigger)

3 AUTOPILOT DISENGAGE PUSH BUTTON (This button has 3 pairs of contacts)
Boeing wiring harness colors
Pair 1 - White/Blue + White/Black/Yellow = A/P Disengage (Normally OPEN switch)
Pair 2 - White/Yellow + White/Green = Normally CLOSED switch *Not assigned in my sim*
Pair 3 - White/Black/Green + White/Brown = Normally CLOSED switch *Not assigned in my sim*

Cheers, Gwyn

[petersm99]

Hello Gwyn, This is highly appreciated. I was just about to start on this task for my own yokes and saw this! Thank you very much. Best Regards, Marc

[golfromeo516]

Gwyn
I agree, very handy post indeed.
Thank you
Tony

[davjones]

This is great info and will help me too. Perhaps the other two pins are for the light in the trip number reminder (if that's what it's called)?

Thanks!

...Dave

Dave Jones
Fort McCoy, Florida USA