[shorod]

Do you already have the amplifier? Does it have the capability to accept high-level inputs?

You could utilize the speaker level (high-level) inputs if the amp has that, or purchase or build a line-level converter to convert the speaker level to low-level (RCA).

You may also need to adapt the remote turn on or find a switched ignition input.

Does your car have the Electronic Automatic Temperature Controls (EATC) or manual (knobs) for the Heat/Vent/AC controls? If you are planning to upgrade the deck, then you hopefully have the manual controls. So far I'm not aware of anyone who makes an adapter plate for the EATC.

-Rod