I installed the heater control box cable tonight. The control is mounted on the far right of the instrument panel which provides for a fairly easy routing. The cable curves down over the rudder bars and is attached to one of the firewall support angles with an adel MS21919-WDG3 adel clamp and then passes through a 1/4″ hole in the vertical firewall support angle behind the wire bundle.
The housing will be anchored with another adel clamp to the bolt on the right and the protruding wire will attach to the b-nut on the flapper arm. There’s no point hooking these up now since the control cable has to be removed when the instrument panel comes out for paint and labeling.
