routing power?

Hey all, I have a question about routing power in the car for mobile video...

I have 6 items that need to be powered on the roof: 3 15" flip-down monitors, 2 sun visor monitors, and a video signal booster. Each piece of equipment has #18 gauge power/ground leads and they are fused with very thin glass fuses, so I'm assuming they draw very little amperage (none of the equipment lists actual numbers and Google searches proved useless) so I'm assuming total load I'm looking at under 15 amps or so. I have some spare 9ga wire I could run from the battery up to the headliner for power (it might be overkill but the next smallest wire I have is 18ga and I'm trying to work with what I already have available...)

Once I get the 12v lead run from the battery up to the headliner, I'm not sure what the best way to distribute the power would be... I've thought of everything from installing a mini-fuse box (might not fit up in the headliner where I need it, plus cost issue) to an inline fuse holder (9ga in, 6 x 18ga wires out) and for a minute I even considered the half-ass way but I'd rather not do that (cut the 9ga insulation 6 times and just wrap a wire around each slice to tap power.. lol not very professional or safe)

So, my main question is, what would be the best way to distribute the power to each of these devices? Thanks!

Have you thought of using a buss bar. You could make a bar, drill enough holes for the equipment and a power input. It would be fairly thin and easy to make.

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2001 Tahoe LT
JBL W15GTix2-JBL BP1200.1 Stinger 15 Farad Capacitor.
Sony MEX-BT5000-Kenwood KNA-G510-Kenwood LZ702W Touchscreen