Cold air AC mod

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Mar 13, 2016 | 04:06 PM

Jaime74656

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From: Earth

Cold air AC mod

Ok it's that time of year again when we are starting to break out the AC system and use them, and I have done most of the colder air mod (installed the heater shut off valve) but I look behind the glove box and unlike other truck pics there does not seem to be any pass through to the cabin in the fire wall, all I am presented with is a large black box that I presume is the heater core....so at the moment I am at a loss and need some direction as to where to go, I have an E99 truck, F250 SD if that helps any...if any pics are needed I can get some, just let me know

Mar 13, 2016 | 06:51 PM

aawlberninf350

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From: Elk Grove, CA

Here is a LINK to the mother of all AC mod threads. Were plenty of pics at the time and hopefully they still work.

Mar 13, 2016 | 09:12 PM

Jaime74656

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From: Earth

I'll have a look through that thread, I know how and what to do, it's just location of a grommet verses the pictures I see not matching what I see in/on my truck that is more the issue here, thanks for the link though

Mar 14, 2016 | 07:31 PM

F350-6

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From: Texas

It really doesn't matter where you pass through the firewall. If you don't have a plug where everyone else seems to, drill a small hole or route it under the seat and look for a plug there.