Civinfo Hobbyist Trader
Car: 2010 CTS GT
Join Date: 8th May 2013
Location: Cambridge, UK
Thanked 410 Times in 330 Posts
Yes, you need a LOC (Line Output Convertor).
Then tap into the rear speaker wires under the rear seats - you can just pull the carpet back a bit.
Easiest remote wire to use is the boot power outlet - thick yellow wire in the same place as the rear speaker wires, this will mean the sub is on the whole time the car is on - not just the stereo.
Power wire of course needs to come from the battery, may need to drill a hole for this.
Ground wire I connected mine to where the seat latch (the bar thing under the seat) bolts to the chassis.
Last edited by x5252x; 15th December 2013 at 20:17.