'84 Dodge Ram Truck... need climate control vacuum line plug color info (yeah... it's me again)

Trying to repair my dad's truck. Climate control vacuum line plug crumbled. Thanks in advance!

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.