I think our Sony systems work pretty well, it seems you are going through an awful lot of work for small gains.LMAO Ok, first off. O gauge is easy, been there, done that. I ran it in my 2013 for that system. Second, yeah its not light. I can't say what it weighs, but it's heavy, and I built it as lite as I could. The convertor is just that, takes the high speaker outputs and turns them into RCA out puts. I have a four channel in 5 out though, four channels for the doors ( mids n highs ) and the fifth is for subs, or sub in my case. Connector 264 is a plug over on the passenger side just behind the shifter where all the wires for the the door speakers are. What you have is eight wires and a shield ( bare copper ) two for each door, I have plugs from some of the cars we had at work for parts, I take the plugs that match the ones in the car, one set goes to the convertor (signal output ) , goes to the trunk. Under the deck you see is where all the wiring is, and the convertor. the other one goes from the four channel amp for the doors back to the front and into the plug that feeds all the doors. Reason I,m doing this to keep my RCA,s as short as posable. The cables going back n forth are 9 wire with a shield, ninth is a remote, I just cut them off at the ends since I have the remote running on the drivers side with the power cable. You buy a 50 foot roll of it for less than 40 bucks, 18 gauge, which is more than enough to run doors. I got some picks of what's going on under it, Ill have to post here in a bit. The processor will let me tune all the channels independently from one another, SO I,ll have one set for the front door, the rears, the 6x9's in the deck, and the sub. Oh and the three switches are for the amps, each one is a remote, plus a volt meter, and a 12 volt outlet just because. I can turn each amp on n off independently from each other that way if I need to trouble shoot something ( sometimes you dont want bass blasting in your ears when your chasing an issue with a door or a 6x9. I think I covered it all, LOL. Any more questions fire away, I,ll do my best.