Will do, buddy, but I'm at work now so it will be tomorrow.
Just going of my sorry gin soaked memory now, and I haven't actually cut the BCA female end off yet, but as I remember it there are only 4 or 5 wires on the connector at the camera. Red positive, black negative, yellow video, gray audio, many another for second audio, ( just don't remember, could have been just 4 wires ). I saw nothing looking like a shielded jacket for the video at this connector.
At the BCA female connector, the one I propose to cut and splice into, there should be the yellow video cable going to the center female pin and a stranded shield that goes to the outer metal housing of the connector surrounding the pin.
It's that shield that I'm talking of connecting to the vtx housing.
You don't normally terminate a shield at both ends or it just turns into an antenna. By leaving one end open it draws noise away.
I could even just connect it to the cf frame and do the same thing.
On a machine you hook up a transformer to a + and - terminal strip and the shields for control circuits to earth ground.
Pretty sure this is the same principle, but as I inferred to I have 'damaged' a few brain cells by accidental injestion of large quantities of alcohol once or twice.