You will find a small vac hose plugged into your ccv which presumably is not insulated and thus will be visible right in the front of yours.
Don't forget to plug the hose into your new ccv. You could replace the hose. I didn't...so far, so good...but wish I'd done it.
Anyway, the port is hiding beneath the foam covering on the insulated ccv...just remove the o-rings holding insulation on...remove plug on port...and plug the vac hose in.
No, my interior is as ugly as my green...beige. Though, with my Fern Green tires, things are pulled together pretty tightly!