[CA] MFD-VHF DCS-GPS-SHS-AIS Diagram

[O1dSoldier]

Hi Folks,

I FINALLY got around to installing the AIS500 discussed in this thread. I have attached my depiction of the wiring diagram based on what was sent to me sometime ago by one of the moderators and would like to get a second look.

Using this wiring diagram I was not able to get GPS or AIS "lock" at all so I tried connecting the red wire form the MFD SeaTalk to the GPS Red/Green and SHS Red wires and everything lit up right away.

My question is if the drawing is wrong and should have included the red wire I mentioned above or if I just got lucky and there is some other issue that I have managed to by pass.

The SHS is the Gyro Plus 2, the GPS is the Ray125, MFDs are classic E series. The SHS does has a switched 12v power feed.