HondaGal : Take a look here:
Powerlet Products. They have some interesting set-ups.
I just got, from Radio Shack, a 3 unit outlet. It's sealed and I'm going to keep in under my rear seat. If I'm using 2 units at the same time, GPS & satellite radio, I need 2 power supplies. So, rather than mounting the single plug that has the exposed connector plugs in the back, I decided on this unit. And, it will disconnect from the power plug. So, when I'm not using it, it's easily removed. And, you can also put it in your tankbag and have your wires running into the tankbag to keep things tidy.
Here's a pic of what I have. For $15, I figured it's worth a try. I could always use it in my car if I don't like it on the bike.12v 3 outlet car power adaptor
I don't have pics of my install because it still work in process, but I'm hooking it to a switched power source line. I haven't tried it out yet, but am planning on finishing it this weekend.
Let us know how you make out.