i was reading threw the diy and found this. https://www.audiforums.com/m_318162/tm.htm

my question is, i have the symphany things,no bose, and wonder if i could still connect everything to it the same way. i have 2 12" subs that i wanna connect into my car but i wanna keep the same stock deck, no after market decks i dont like em, would that diy work even tho i dont have boses?? if not can someone help me find another way to connect em. thanks

 

YEA IT WOULD WORK.....ALL YOU NEED IS A HI-LO ADAPTOR WHICH HOOKS UP 2 DA BACK OF YOUR STOCK STEREO SO YOU CAN PLUG THE RCA CABLES INTO IT...HERES THE WEBSITE WHERE I GOT MINE FROM..... http://www.installer.com/hilo/

 

dont use a high low adapter. Splice in some female rca's into the back of the head unit into the rr and rl wires and then the grounds to the common ground and run rca cables to the amp. PM vitaminb6 or badluckaudi for further help (they helped me a lot with my sub setup), or keep searching.

 

Yea a high to low adapter is a piece of $hit pain in the *** that makes your stereo sound like $hit , RCA's are deffinatly the way to go I have done it a number of times and can help you out if you have any questions

 

More than you ever needed to know has already been posted. Bonus points if you can come up with a question that can't be answered with search

 

and chances are one of us can answer that question if need be

 

sorry man, I don't exactly get to use that much.

 

cool, thanks for the help. much appriciated. will post pics when im done.

 

just to be safe, let me know if my searching has done anything for me lol, run rcas from the h/u,spliced into the rl and rr, to the amp,from the amp to the subs. just wondering where would the remote be and that "common ground". thanks again

 

i finaly got time to complete my sub setup. i took ur advice and it all worked out. heres a couple of pics. its not finished yet still have to mount the amp up top so its not scene but its all working and bassy. an oam meter was the most important tool of this job i found. had to find the remote from the stock amp to splice into my other amp. it all works and sounds great. kinda sold the 2 12s and got a single 10. thanks for the help.