Hi, I need to remove my heater control panel. I have removed the radio, and can now see the connections on the back of the panel. There is a cable connected to the back of the air direction control dial that I cannot remove. the cable has a large green collar that you can pull back away from the panel, but it will only come so far, as there appears to be some kind of hidden spring holding it on. I have tried twisting the green collar, and also squeezing and pulling, but all i have done so far is put a crack in the green collar that I am worried will break completely, leaving me with a bigger problem. Any help with removing this cable with green collar without causing further damage would be greatly appreciated. The Haynes manual is no help at all!

Cheers.

Phil.