Ford Fusion / Mercury Milan / Lincoln Zephyr & MKZ
I have a 2011 Ford Fusion SE 2.5L
I run the stock head unit, with out Navigation, With Sync and with out Sony premium audio.
I would like to know how I got about wiring in 2x more speakers for the deck lid.
Can I just splice them in in the back of head unit @ wiring harness to say the...