Connect where? - CorvetteForum - Chevrolet Corvette Forum Discussion

C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette

Connect where?

Old 01-13-2018, 05:58 AM
Junior Member
Thread Starter
Member Since: Jun 2017
Location: Helsingborg
Posts: 9
Thanked 0 Times in 0 Posts
Default Connect where?

Hi, been looking through my manuals and found out (White hard plastic line) it connects with the water shut off valve. Correct?

Where to connect the other end? Under heater controls in center console?

Second question. The rubber hose (half green/half black) with rubber ending. It´s in the wiper compartment and goes out to the engine compartment and about 4" to the center it goes through a grommet and back in. Probably somewhere under the dash I guess.

What is it and where to connect?

1979 L82 4spd
Best regards Björn

Hope u understand my English. (Swedish)
Attached Images  
redkenyan is offline  
Old 01-14-2018, 03:14 PM
CF Senior Member
GUSTO14's Avatar
Member Since: Sep 2003
Location: eastern NC
Posts: 6,860
Thanked 696 Times in 625 Posts

Björn, welcome to the Corvette Forum and your English seems just fine.

You might want to send a Personal Message to Ernie at Wilcox Corvette. He has a lot of excellent diagrams that may help you trace the line you're talking about. He's also very familiar with the systems you are referring to. He's extremely helpful at getting answers on just such questions as you are asking.

Good luck... GUSTO
GUSTO14 is offline  
The Following User Says Thank You to GUSTO14 For This Useful Post:
redkenyan (01-15-2018)
Old 01-14-2018, 04:08 PM
CF Senior Member
SwampeastMike's Avatar
Member Since: May 2015
Location: Cape Girardeau Missouri
Posts: 1,531
Thanked 217 Times in 200 Posts

The other end of the water shutoff valve is the water shutoff switch. The switch is behind the glove box on top of the HVAC box. The "button" on the switch is pressed when you move the temperature lever all the way left (cold). When pressed vacuum flows through the switch to the valve. The other line that connects to the cutoff switch leads to a "T" behind the dash. The "T" is installed in vacuum supply line that leads from the engine compartment to the HVAC selector switch.

The hot water shutoff switch has three connections as it can be installed either normally open or normally closed. It is sometimes not connected properly. Different switch versions were used so connections may not be the same. If you have a hand vacuum pump it's easy to hook up properly: The vacuum source (from the "T" I mentioned) should be closed (hold vacuum) when the button is NOT pressed. Press the button and find which other connection now has vacuum and connect it to the line leading to the valve.

I wish my second language skills were half as good as yours!
SwampeastMike is offline  
The Following User Says Thank You to SwampeastMike For This Useful Post:
redkenyan (01-15-2018)
Old 01-14-2018, 04:46 PM
Alan 71
CF Senior Member
Alan 71's Avatar
Member Since: Sep 2006
Location: Westminster Maryland
Posts: 30,366
Thanks: 0
Thanked 2,719 Times in 2,402 Posts

Hi Bjorn,
I'll say welcome too.
Here's a link to a thread from last year containing some 79 a/c information from Willcox.
You may find it to be of some help to you in addition to what Gusto and Mike suggested.
Alan 71 is offline  
The Following User Says Thank You to Alan 71 For This Useful Post:
redkenyan (01-15-2018)

Thread Tools
Search this Thread
Quick Reply: Connect where?

Sponsored Ads
Vendor Directory

Contact Us About Us Archive Advertising Cookie Policy Privacy Statement Terms of Service

© 2018 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.
  • Ask a Question
    Get answers from community experts
Question Title:
Your question will be posted in: