OT: What wires to add for future radio.

[jumpsoffrock]

I'm working on an old 4 door project car and do not want to buy a radio and install the speakers at this time, but the seats are out and the carpet is loose.

If I need to run 2 6x9 to the back, what wires should I run for future use?



Mods, the audio forum appears fairly dead, if you want this somewhere else, go for it.