Subaru WRX multiple buttons project

Hi all.  I have a project for my wrx.  I'm a mechanical engineer, familiar a bit with eletric/electronics, but i do need your help.

Alot of people add electrical things to their car that require a switch to activate.  This project is about just that.  I will in the near future add lights and gadgets to the car that i will want to be able to turn off and on from a ''center console''.  What i would like to do is use the original pop-out cupholder (modified of course) to put a series of (lighted or not, preferably lighted) ) temporary push buttons ( 6 - 8 of em).  (u know what i mean by temporary ?) 

I want this to be verry neat, so i tought of using a standart connector in the back of the cupholder (in dash) to have a quick connect of these buttons.  I tought of using something like a printer cable connector ( u know, like 20 pins / holes in there) and make a circuit board to be able to hook all the buttons on the adaptor.

Then these would run threw a fuse control panel, under the dash and then to the motor compartment where i would have like a block full of relays to activate the gadgets (power the 12 volts).

I would like to hear your toughts about this project, and any suggestions u might think of ...

Like what kind of relay turns on with a temporary current and off if i press the button again ... ?  Also how would it work if i wanted the push button side of the circuit to run on low voltage (a transfo i guess ?) or could the small pins of the ''printer connector'' take the current good ? Would'nt it be too small for 12 volts ... even if its a temporary (momentry) signal ?

Another thing is, how small can these push buttons be ? The cup holder maybe like 1/2 - 5/8 in thick ... do u see what i mean ?

Are my explanations too wild ? Am I makin any sense at all ?!! héhé

Thanks in advance

Phil

Do you think it would be dangerous (small wires getting too hot) to use like a printer cable adaptor to activate the primary relay (3 rd one from left)?

And how would the lighting of the push button work ? I'm guessing its fed directly, and turns on and of (normaly off) when u push on it and turns off again when u turn the car off ?

Thanks

Phil

Here is what i would do:

But thats because i like using electronics. It is based around a JK flip flop, with J and K tied making it a Toggle Flip flop. It drives a transistor, that in turn drives a standard 12 Volt relay. Also i put in an LED for visual feedback, if you are using lighted switches, you could use that power. I think it would look better though if you put just a standard momentary switch with an LED above it, but thats just me. That chip it is based around (4027) is about $0.50 and has 2 flip flops in it so its not an expensive projest or anything. Well thats my idea. Good luck with the project.