98 LS400 subwoofer install (stock system)
 

I'm installing two 12's in a sealed box, everything else is stock Nakamichi. I just have a couple questions..

1. There are two methods as far as I know. I can use an LLC (line level converter) at the subwoofer wires and use the outputs from that to connect to my new amp. I've also read that I can tap into the preamp signals (in between my headunit and stock amp, before it goes through the amp) and use those to connect to my new amp. Which way is better?

2. What is the best spot to tap into the remote turn on lead for the amp? I've read that I can connect it to the heated seats fuse (or any one that only works when the ignition is on) using a fuse splitter. Any better ideas?

Thanks

i would do the Line Input Converter were the subwoofer is. makes installation way easier. you will have an amplified signal. so you will have an amplified signal into another amplified signal. ive notice a lot of people use the heated seat fuse. im not sure if that will with when the ignition is on. you can dig into your interior fuse box and find the ACC fuse you will be golden. thats what we did for my cousin g/f accord. since going behind the deck was a breezy.

Yes i agree..tap somewhere in the rear to make it easier.

Hey, anybody find a good location for their amp turn-on wire yet? I have a 99 and am doing just about the sam type of sub install as you and I don't want to have to do a bunch of searcching and splitting wires up front if I don't have to.

I tapped the ACC at the back of the CD changer. You can do the same at the back of the radio, amp, or ignition harness.

Tap the LOC in at the subwoofer as PK said.

Tapping into an existing part is a good idea. Also you can tap into the radio fuse in the fuse panel with a fuse-tap.

i have a 2000 ES300 and im trying to put a new sub in the back and spliced the two wires going to the stock sub to a single audio jack and plugged that into the amp i want to now if that is correct and also where i can find a remote-turn on lead for the amp thnx for the help

please dont do that. it is ghetto and can be unreliable at times.

do it right the first time to save yourself the hassle. just tap into the factory amp of the changer. that will save you time and work. less chit to take apart and less wires to run.

thats why i love doing systems in BMW's. doing a system can be done with your eye closed. i think once i did a 3 series sub install in under an hour. everything is in the back of the car :)

do i have the connection to the amp rite though....and where is the factory amp???