OK DG, with your help, more research on the forum, and my AllData account, I’ve almost got this figured out. What I’ve been referring to as the “Acorn” valve is the “Purge” valve. I have the lines connected properly to the purge valve and the thermo vac valve , all I need to do is connect the purge valve to the charcoal canister diaphragm and I’m golden. I can’t find the charcoal canister or the diaphragm that’s supposed to be connected to it. Does anyone know where it would be? 1989 300SEL.