AC mod Override possible?

[bushpilot]

its got one "input" and two "outputs"....
the CURRENT vac. line connects to one side (12v terminal side)
w/ power off the vac. can flow normally w/ 12v applied it switches
to the other "output"

so in my case i want to use it to PULL the freshair/recirc. door SHUT
when im running the A/C in bi-level (dash & floor) mode.

 

[dpantazis]

what is the original mod?

what is the vacuum line behind the glove box in the dash control anyhow? what other vacuum lines are options?

for seasonal use, could one just zip-tie the lever open/closed?

i was looking at daryl's pages for reference- http://www.forgotton.net/ and http://www.forgotton.net/diesel/heaterbypass/index.htm

dennis

 

[bushpilot]

the problem w/ a "seasonal" lock-down (open or closed) is that
you may need fresh air when it rains...and you may need some
temp/mix if the windows fog...