okay the rem. is a blue wire on the deck, which decks can be hard without a wiring diagram
what i did on my pathfinder is, find a cigarette lighter and splice the wire into that on the + wire. it will do exactly the same thing and work just as well.
on a cigarette lighter you will be able to try every wire to see if it works without a fear of blowing somthing up...trust me i did it lol...i went through 3 out of 4 wires before finding the one that worked. its all trial and error and on a cigaretter lighter your safe