Installing Subwoofer Box, where do I tap into Factory Sub Output Signal?

morrisdl said:

So a couple issues, but its definitely been done by others- there is no line level outputs, sub or otherwise (that I am aware of). The interconnect from the headunit to the factory amp is fiber. I dont know of anyone that has tried to see if its toslink, but that would be a much bigger project anyway. You will have to tap the factory SUB speaker wires for input. Either under the passenger seat, in the tailgate, or some where in between. I have the pin numbers of the amp connection at home if that would help. You need to be sure your amp has line level inputs and not just RCA jacks.

My tailgate 'sub' in the SE definitely sounds more like a full range speaker, so I doubt there is any crossover in play. Sorry for the bad news, but I hope it helps. Be sure to post some pics once you get it figured out!

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angasreid said:

Hey there rambino,

I've tapped into them for my own sub. With the sub in the tailgate, there are 4 wires that run to the sub. Disconnect those wires, but they run through the driver's side of the car into the tailgate with a bundle of wires. I can't remember what the colors are, but use the positive wire running to the sub and run that to your amp for the gain.

That's what I did, worked well too. I do also have a sub knob in my glove box so I can really turn it up when I want.

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