Minom osd issue

[Bsblhater]

I have a minim osd on my qrx 350 pro. My flight controller is the devo m. I get waiting for mavlink heartbeat. I get the overlay. My radio plug has 3 wires in it. A grn,red,blk. Red is power black is ground and the green is hooked to rx . Is this correct

 

[andrew.baker.142]

Not sure if you will find may devo experts in a 3DR forum.