need info on heater core hose conections of a 1966 300 convertable with ac

greg yoder

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just bought my 2nd 1966 300 convertable, this one has factory ac, does it have 2 heater coils?? there are 2 sets of copper nipples on the fire wall??? thanks
 
Heater control valve has 2 also.

From engine into valve
Out of valve in to heater core
Out of heater core to engine
 
just bought my 2nd 1966 300 convertable, this one has factory ac, does it have 2 heater coils?? there are 2 sets of copper nipples on the fire wall??? thanks
is the heater valve on the right side of ac line hook up, or the ones on the left, and is that 5/8 or 3/4 hose,, thanks
 
Usually heater valve is outboard, heater core towards center of vehicle

5/8" hose in 1966

1970 started with one hose 1/2"

Chrysler didn't use 3/4" heater hose on USA cars in the 60's and early 70's
 
In the factory service manual, there is a heater hose AND flow direction graphic illustrating what hose is where and such. www.mymopar.com for free download of the manual.

Plus a hvac case graphic with the heater core picture (installed in the hvac case and such).

CBODY67
 
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