if it was any easier, i caveman could do it.
yes the SWI-JACK is a correct part if you have a Alpine, Clarion, JVC, and Kenwood stereos that has a wired remote control input (just about every nav system will, and the top 60% of their regular lineups will)
the SWI-PS is a correct part if you have a Dual, Jensen, Pioneer, or Sony stereo that has wired remote control input (bout the same as above)
now the axxess AWSC wors for just about every brand, and actually programs itself, however as i have used them before, i have not used one in a LS yet.
i feel like there is something i'm missing...
ohhhhh yea, next time just search!!!!!!!!!!!!!!!
http://tinyurl.com/6k4evy8