I was editing when you posted just now. Please re-read for final info.
This style is the cable version.....and any plumbing supply place will have the handle version. or
FLAPS.Both mounted outside the fire wall.
Joining the hoses together works also and eliminates any possible inside cab leaks. Not that hard to switch over.
Harrison was the supplier to GM for heaters, radiators..........
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Don't know what this is or what you mean until I see a pic or three.
"The heating "module" on the dash is a single button that seems like it will be the on off for the fan connected to the heater core box."What version of the two types of heaters, I posted, do you have?
