I was thinking of not hooking up two of the HDX displays. However the using the RS232 input from the GPS antenna and the ADSB in. I would have each HDX with a separate EMS. Would there have to be a separate line for a separated AHARS box or can I hook that to both?
No separate wiring for # 2 ADAHRS, you can piggyback it onto the existing unit (Dynon sells a simple kit) or install it alongside the other one & add a splitter cable to 'splice' it into the system - then do a config & it should be good to go. Thats how mine is & works a treat
I’ve been thinking some more on this ( that’s a worry ;D) -
In your dual engine installation my guess is -
1. do not use the Ethernet cable between the screens
2. disconnect #2 EMS module & #2 screen from the network.
3. Do a system config using #1 screen
Then reverse that order for #2 screen ie disconnect #1 Ems & screen ... etc & it should be ok - DS may want to chime in here