retail display unit

Is this to select various car audio speakers and units for sale?

You want to wire a wall?

Is this a single system you want to display?

EXACTLY what will the components be?

it would have head units, speakers, amps, subs, and a couple tvs... how complicated would it be to build somethin like that... a smaller version of what you would see at best buy

If you just have a few standalone setups, not complicated.

If you want to have everything switched, plenty complicated.

If you have really long wire runs, things get lossy and more noisy.

I wouldnt consider it a weekend warrior DIY project.

When places like Circuit City go out of business, they sell off their hardware and wiring harnesses etc.