pioneer avh p3100dvd bypass and a cap?

I have searched around the net with not much luck on bypass information on this model. I have seen relays and switches via ebay auctions but was wondering if these can be made myself. And if possible a cool explanation or how to would be GREATLY appreciated for either method. I would prefer not using the switch as a relay would be easier for a lazy guy like myself. Pt 2. I have 2 12inch RF P1 subs in a sealed box powered by a RF 400W amp. I was contemplating getting a cap. What Farad would be best for this type of setup? I am not doing competitions nor pounding 808 beats. Just simple everyday driving. I have a 2006 Nissan Altima 2.5S if that would help. Thanks for your time in looking and responding!

well 1st of all, its forbidden to discuss bypass on here, read the rules!!! also cap are a bunch up crap, lol. they just look good.If I'm to loud, then you're too old!!!