Plastic vacuum line conections for floor, vent, defrost actuators

[mbkairborne]

Ref. Plastic vacuum lines for floor, vent and defrost acctuators

I recently had a shop do an LS swap on my 1978 C10, Big 10 (350 small block to 5.7, 4L60E). For whatever reason, my selector switch for floor, vent, defrost didnt seem to work. It wasn't that big a deal for the short term, but when i hit a small speed bump my glove box fell out (it's been broke for some time I just rigged to stay in place till I got new one). Anyway, when this happened, i noticed a vacuum line hanging down with a connector on the end of it. I've pulled the dash and gauges and went ahead and pulled out all the platic plumbing for floor, vent and defrost (cleaned out quite a bit of mouse nests) so I could gain better access and visual of plastic vacuum lines...however, I cannot find where this line connects...Acctuator on passenger vent wall is connected as is the tee in front of it. Actctuator left rear of ashtray is connected. the hose length of loose line places it in the center of glove box opening.

Aprreciate any diection or guidance.

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[Snoots]

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Does this help?

 

[Craig 85]

Here's a couple more I have saved.

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