When I got my cali, I opted not to get any of the upgraded stereo system components, because I enjoy doing my own audio installs. However, all the audio installs I've done in the past have been with the assistance of a Haynes manual!! LOL! But anyway, I was curious if anyone had advice on where to run the lines for an amplifier. I would most likely be putting it under the driver's seat. What I'm most curious about is how to get the hot line through the firewall! Hopefully when I start pulling the dash apart, the RCA line won't be too difficult to route. As far as my head unit, I hope that whole thing with splicing the yellow line into the 12v isn't going to be terribly difficult. I'm no pro or anything, but I do know a few things from installing my friends' audio stuff, and I look at this as a bit of a challenge. I kind of miss my old Escort's trim; everything just had screws!! Any advice is greatly appreciated!!