No he is using a Skylark osd not an EZOSD you have to make all the harnesses work together
Gimme an hour I will post a picture of how to wire it. Looks like you have it wired wrong. The wires should not all be connected to the OSD in the manner you have.
I think I know where the confusion was I was basing it off of you having the GOPRO to IRC cable not the simple gopro to video/audio cable. If this doesn't work please post links as to exactly what cables and equipment you are trying to use.
Here you go. Also ensure you are using the proper pins on the OSD. If you have the gps antenna input on top the 3 pins to the left are what you should be using.
Mashton, I did not. I'm not going to hook it up to gpopro. Too much hasle. Thanks for your help.