Our Equinox is very similar to your Captiva and I also have to pull a fuse. Like yours, that fuse deactivates the power outlets. Actually the one in the rear is still hot but it's to far to reach. I purchased a power outlet, a fuse and a little wire at an auto parts store. Wired it directly to the battery. Probably $15 in parts and 20 minutes to install.
2006 Gulfstream Friendship G7, Cat C7 and Allison 6 spd
Honda VTX and Crusier Lift on the back
Blue Ox Aladdin, Brake Buddy, 2014 Chevy Equinox toad