Another noob question or two
 

I am going to put seafoam in the vacuum line of the brake booster. Does the vacuum hose on the booster just pull off or is it connected somehow. Or do you pull the hose off the check valve.
Also, I think I have a short on fuse no.1. How do you get under the fuse box to clean or check the wiring.
The car is a 1987 944.
Thanks

The check valve pulls out of the booster, but the grommet stays in place.

Not sure about pulling the fuse box...

Instead of pulling the fuse box, get a copy of the Haynes manual and trace through the wiring diagram and find what's attached to that fuse. Start pulling things until the short disappears. If that doesn't work, refer to the fuse discription on the lid of the box. Maybe you'll get lucky.