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A/C Plenum Flap Hose Routing

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Old Apr 27, 2013 | 08:10 AM
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Default A/C Plenum Flap Hose Routing

I've dug through the archives but have not found my answer-

I'm installing factory A/C in my 69' Coupe and I am trying to figure out where to put the 9/16-ish sized hole in the firewall (going into the wiper area) so I can properly route the green striped hose for the plenum flap control.

My AIM shows the hole should be WAY over on the passenger side, just inside of where the hood latch is. The vacuum harnesses I have (I have several) all have the grommet on the hose placed about 7 1/2" from the large grommet where the harness passes through the firewall.
There is no way I can stretch the hose over to where AIM is indicating and have the grommet in the location of the hole. I will need to put the hole somewhere closer to the center line of the firewall (somewhere between where the harness comes through the firewall and where the wiper door actuator is mounted).

Any pictures or advice would be most appreciated.
Thank you!
Elm
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Old Apr 27, 2013 | 09:02 AM
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Well, I would say if you want it as factory, get a longer hose. I have my wiper door off right on my 71 w/ factory AC and can take some pictures later. From what you described, that sounds about right for the routing. I can confirm later today.
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Old Apr 27, 2013 | 09:35 AM
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Here's some pics. It goes through right under the washer tube hole.

The hole you described sounds more like the HVAC source hose. Which is right near the hood latch.



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Old Apr 27, 2013 | 10:37 AM
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Interesting-
The routing on my 69' is totally different.
The top hole, where you have your hose is where my wiring comes through (yours appears to have been changed at some point because the factory normally wouldn't run electric and vacuum lines through the same grommet hole, they would be separated by different holes or a multi-holed grommet) and the bottom hole on mine is much larger and has the 3 hoses coming through for the wiper door vacuum switch.

The search continues..
Thanks!
Elm
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