Hi,
On sunday, my mate helped me with installing a button in order to turn the gala feed on/off to allow for tv in motion. In fact, he did it all..
He made a special relay system as you can see below...lot of wires - i don't know how he did it but it works...including the light on the button.
It filled another blank button on the dash
and it allows me to turn it on and off depending on whether i use the sat-nav or tv
Before:
During:
After:
-Oli