Accessing Radio Connection In a 1969 Valiant
There are nuts on the shaft stems behind the knobs.There is a rear support attached with one nut to back of the radio. It drops down behind the ashtray hanger and attached to the dash itself with one screw. That's what is prevnting removal of the ashtray hanger.
You'll probably find the signal flasher is attached to right side of the ashtray hanger.
All of the radios connections are on its left side. Still not easy to get to with the radio in position.