93 altima lock/unlock wire

[DJ Bran Boogy]

ok i'm still trying to install my alarm. i found where the door lock timer was and unplugged so that i can c the wire. now the sheet said that the lock/unlock wires are grey/red and grey/blue. the problem i am having is that there two wires that fit the description for the lock wire as well as unlock. there are two wires that are grey/red and two that are grey/blue. one is thicker than the other so which one do i use for the lock/unlock. the bigger 1 or little 1?