depending on the HU you use, unless you have 3 pairs of RCA pre outs, then you need to get a line out converter that takes a standard speaker output and transforms it to a RCA output, which makes it possible to then run the signal to an amp. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
check froogle for "pyle" and "line converter". they are cheap at buy.com i think.