I'm not a big fan of jerry rigging something and hoping for the best, especially when the fix isn't "that" hard if it is the fuse attached to the cig lighter. The "fuse" on the back of the cig lighter is just a very thin wire, like a filament, and if it gets too hot it breaks, thus not being replaceable like a fuse. I personally have had the "fuse" blow and have taken out the old cig lighter in and installed a new one, though on a WRX.
There are a few helpful dealerships on this board. I've had nothing but great experiences with both Annapolis Subaru and Fred Beans Subaru. If you need help with any parts, give these guys a call or even a PM on the boards. They'll help with part numbers and give very competitive prices on the parts. Good luck if you do tend to try and fix it properly.