Does anyone know if the head unit it the 2001 RX300 has rca cables in the back of it. Reason why I asked is I just bought a Boss Bass1200 for my Lexus and need to know if I can hook it up with RCA cables or if I have to use the high pass. If I have to use the high pass, can someone tell me how to do that as well? I have a L+, L-, R+, R- and Ground wires for the high pass. I just don't know what wires they go to. Thanks.