Broken Vacuum Line Help

[Crassis-Comanche]

Hi All, I am in the process of replacing some of my deteriorated vacuum line hoses and I cannot tell what this thin plastic black line is. It's obviously broken off and the part in my hand runs into the firewall on the passenger side (along with the pink line) and the remaining piece of line travels along the inside of the passenger side fender, down into the reservoir behind the front bumper.

 

Is this something to do with heating? I have pretty good heat in the truck. Also my vacuum harness looks to be in good shape but the rubber attachments and hoses are breaking down. Can I replace just these and keep the plastic harness?

 

I think my charcoal canister hoses are also deteriorating. Can we get these separately?

 

Thanks for the help all!

 

Chris

 

 

[Crassis-Comanche]

I did find this thread from last year:

 

http://comancheclub.com/topic/45621-hvac-selector-vacuum-leak/

 

But I am still unsure as to what the smaller black plastic line does? I see now the pink line is the heater control vac line.

[SVPete]

The thread you referenced states the black line is the vacuum source for the inside controls. Refer to posts four and seven.

[cruiser54]