Originally Posted by calvin.lehman
I added subs and amp in my 2012 focus. I used the converter on my rear speakers by taking out the seal molding along the bottom of the rear door opening and tapped into the rear speakers then ran a ground wire inside the trunk and the power wire through the firewall to the battery... the remote wire was ran to the fuse box under the glove compartment and used an add a circuit that had a wire tap and tapped into something that turned on with the key
Where exactly did you find the hole in the firewall for the cable? Was it with all the other cables going in on the passenger side?