Wiring/installation help

[NJTSX]

Okay so i plan on wiring up a complete audio system this summer and i ran into a little bit of trouble regarding the subwoofer mono amplifier. With the no splice adapter, you get preamp outputs for the front right, front left, rear right, and rear left speakers which would all be run to a four channel amplifier. My question is, how does the mono subwoofer amplifier get a signal, and what happened to the signal for the 6x9's in the rear? This is probably a dumb post and i'm just overlooking something small, but any help is appreciated. The "no splice" adapter is in reference to this post http://www.tsxclub.com/forums/showthread.php?t=18912

Also, when using the same 12v remote turn on lead to turn on both amps, is it necessary to use a relay so that they do not draw too much current?

What is the best way to get to the tweeters in the dash, is the removal of the glove box etc. necessary?

Thanks a lot in advance, i plan on installing over the summer so i'll probably be back with questions as they arise and i really appreciate all the help available on these forums.

[Jays98cobra]

u coming to the jersey meet this saturday...ill show u how i did mine
Jay

[NJTSX]

Can't make the meet this saturday because of work, but i don't plan on actually doing the install for another couple months because of governor's school so maybe when the install date nears we can meet up. Neighbor is also re-doing his system (which is where i'm buying my stuff from) and might have a very knowledgeable guy come down so that could be a huge help. I have the gist of it down on paper, just a few little wiring issues i need to figure out. Have fun at the meet though, glad to see everything got sorted out. Should have nice weather too.

[Jays98cobra]

ok man if u need a hand let me know. Thanks
Jay