This is a bit of DIY project
and if u ever go racy ull see lots of these on the drivers pit tables....
they plug into ur power supply then ur charger, tire warmers etc etc etc plug into the box points makes it alot easier to get things plugged in and unplug when u need them and also geatly limits the changce of them shorting out accidently....
heres a pic... with some brief instructions to follow underneath....


ok all the parts are easy to get and u can get them all from a good eletronic place such as Jaycar, Radioshack etc etc
parts needed...
also Mitch ill post the Jaycar part numbers for u :P
Small Box... any colour and size is ok as long as its big enough to hold all the points u need/want smake sure it screws shut or clips shut... basiclyu just make sure the wires and terminals are eclosed complelty u dont want it shorting out.....
P/N - HB6011
Banana Terminals Black and Red - as many and u need/want...
TIP - always get and install a few more than u acctruly need incase u get another gadget u need to plug in later...
P/N - PT0453
P/N - PT0454
Banana Plug Black and Red - these are just used to plug the box inot the power supply
P/N - PP0400
P/N - PP0402
and some wire... any decent wire rated to atleast 15amps would b fine...
i had some left over from another project i did ages ago.... :P
now this is a very easy project its a little fiddly and needs some at least half decent soldering skills....
1/ 1st of all mark out the box where u want to put the terminals
2/ dill out the holes to put the terminals in, also drill a hole in the side of the box for the wires to come out.
3/ put the terminals in the holes and screw them in tight the supplied nut.....
4/ get the wire and mark out where the termils are with a black marker
5/ with a scaple/stanley knife cut the plastic off the wire at the points where u marked the terminals where going to go do this for both the red and black wire
6/with the soldering iron put sum solder on exposed wire (in the process u might melt some of the plastic coating on the wire, dont worry to much about that) and put some on the bottom of the terminals
7/ feed the wire thoguh the side hole and solder to the bottom of the banana terminals do this for both the red and the black wire
8/ soldering the banana plugs to the end of the black and red wire
9/ before u put the bottom on the box, test the power box out, plug it into the power supply and turn it on (makre sure theres nothng in the way that can short the box out) and with a charger or 12v fan got down the terminals pair by pair and just check they all work...
10/ when they are all working put the bottom on the box and thats it... put some rice boy decals on it if u wish :P
this is a rather cheap project the parts cost me $21.85(AU) from jaycar without the wire i had already at home...