i'm trying to hook up my cb to a 12 volt plug adapter but the adapter has only a red and black wire and the cb has a red, orange and black. the red and orange both have fuses. the red being 2a and the orange 1a. can i splice these with the 2 wire adapter aand which 2 wires do i splice with the 1 wire frim the adapter. connecting the colors would be easily understood. thanks