k guys, here's my situation. mind you, i've done tons of search, and got so many different answers, so i am more confused now. the jvc unit's (that i'm planning on installing) wiring that comes out of the unit does not have the blue power wire, and the scosche http://www.cardomain.com/item/SCOHA08B wiring harness does. what do i do about this, and also, will i loose my keyless entree (2001 ex) if i just do this swap, or i do i need this harness instead : http://www.cardomain.com/item/SCOHAK1B

thank you.

ps. i know that the vehicle's power wire is green/yellow, but what good is it if my receiver harness does not have the power wire output. thank you!