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I'm still putting my 68 together ! I've looked at many vac line diagrams and still can't figure where one vac line goes ! Coming out of the fire wall on the drivers side there are 3 lines. I know where they go.Then just off center toward the passenger side of the fire wall there are 3 more lines coming out. One goes to the heater valve & one goes to a plenum door down under the wiper door ! it's the 3rd one I cannot figure out by any of the diagrams ! this is a 68 ac car !!!!
Not sure on specifics for '68, on a '72 there is one open, like a vent, for the wiper arm system but the Willcox '68 diagram doesn't seem to show such a thing.
Do you have the windshield washer hoses accounted for?
From: Lincoln NE Riding and Driving Corvettes since 1967.
Originally Posted by 76yellow
I'm still putting my 68 together ! One goes to the heater valve & one goes to a plenum door down under the wiper door ! it's the 3rd one I cannot figure out by any of the diagrams ! this is a 68 ac car !!!!
The third small one goes to the vacuum valve under the fender and activates the override for the wiper door.
The diagram you have here is for the headlight & wiper door vac lines. I have those figured out & done. I'm trying to figure out the AC/Heater vac lines. I found another Willcox drawing for this. The grommet on the fire wall for these vac lines, one goes to the heater hose water valve & one goes to blower intake air door actuator. The 3rd one appears to go to a vacuum source !!! So it looks like I need a vac source to the filter & check valve to the vac tank & related things like the headlights & wiper door stuff & then another source for the heater/ac controls ! I've looked at every diagram I can find & that's what I've come up with. Sure would simplify things if someone would make a diagram showing the fire wall & what side are on......engine bay side or cabin side !!!!!!
I think that answers question ! My hoses don't have colors on them anymore but the green is going where it should & the white is going where it should so the one I have left must go to a vacuum source which I should be able to T in anywhere !!! Thanks for your help !!!
68 Vac lines
