King KX155

[Streffpilot]

Hello, I am helping a buddy work on his airplane. We need to turn his King KX155 on on the workbench, however, we are having trouble finding a good clear wiring diagram of the board.

Can anyone help?

Thank you!

 

[Pops]

Hello, I am helping a buddy work on his airplane. We need to turn his King KX155 on on the workbench, however, we are having trouble finding a good clear wiring diagram of the board.

Can anyone help?

Thank you!

Yes--- https://www.sigtronics.com/_pdf/air_pdf/air_intercom_pdf/SPA-400_King_KX-155-165_Inst.pdf

(#7) Red--- 12/24 volt +
(# 4) Black --- Ground , Negative