With the encouragement of some people here, I'm gradually tackling my own install. (It's a NEW CAR, I am reluctant to scratch the doors, but I'm going to try it anyway....).
So, stupid question #53 : I'm putting an amp (JL Audio 700/5) and subwoofer in. Where do I get the subwoofer signal? This is a stock GM head, no subwoofer out. Do I derive it from the rear? L & R? There IS a separate Sub input on the amp, so I don't think it's going to do the cross over for me...is it?
HELP! Am I missing (yet another) obvious thing?