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Discussion Starter #1
I just wanted to know if the control switches are also vacuum controlled or if I only need to replace the white chalky line in the engine bay. I know I have small cracks in that line and have tapped a few of them but it's still not enough to keep it from blowing up through the defrost vents on occasion. I just want to know if I need to tear into the dash to look for other lines to replace also when I'm doing this.

If so, are there any write ups on dash disassembly?
 
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