Originally Posted by MLA
Your current pair of tower speakers are each wired to an amp chnl, with the amp seeing a 4 ohm load. I believe your tower harness has 4 speaker wire pairs already routed through it. Since you only have the single pair, the other unused 2 wire pairs are bundled up either under the deck, below tower leg or in the port locker close to the amp. They will be a purple pair and a green pair. Once you locate them, you just need to connect them in parallel with the other speaker wires. This is as simple as piggybacking them onto the amp chnls with the other wires.
MLA, Thanks so much! This solves the mystery... in other words, each speaker has it's own home-run so I won't have to pull extra wires?