Here's my issue my technical friends! I'm halfway through a sub install on my celsior (electric seats are a biatch) And I get stuck with the RCAs.. My headunit has so many RCA ports I don't know which one to use! Also, the remote wire is MIA on the headunit also, I found two unlabeled wires, maybe one of these is the remote wire? I'd rather not ow anything up so your guys help would be much appreciated. Pictures attached for convenience

Cheers,
Scotty

 

The "Sub Out" is the RCA you want to use for your subwoofer. As for the remote wire, the only real solution I can come up with is turning on the head unit and seeing which of the two wires is sending out power.

 

if you are wanting to utilize your stock amplifier, you will have to buy a special Beatsonic box for $330 to have use of your subs (we know, it sucks!)

you don't need the special box of course if you are putting in custom amplifiers or at least a separate new amp for your sub

if you don't need the pieces to pretty up the head unit area, they have a bare bones version with just the magic wiring harness for $225

 

Well either that, or you have the wiring diagram and understand what it's saying.

 

I have an aftermarket amp I wanna use, using the coventional white and red RCAs. So how would I go about using the sub out with two plugs? Also any way to test the power without a volts meter?

 

Found the answers to both my questions. I think. I need a male to 2 female RCA splitter. And the remote wire is in the harness, blue in colour white white stripe. Thanks for the help though guys

 

actually, if someone wants to use their existing LS400 stock amp with a new head unit, no amount of understanding of the wiring diagram is going to negate the requirement of the Beatsonic magic box, it is a lot more than just a harness, it is a multiplexer!

 

Pretty sure Kansas has his aftermarket deck wired in WITHOUT the beatsonic, as do and have numerous others over the past 14-24years of this car being around.

it can be done without a beatsonic, but the beatsonic just allows for much cleaner integration with a LOT LESS work.
iirc, the issue is if you want to use the stock sub and sub amp with an aftermarket deck, then you need the beatsonic kit. you can wire-in the deck to run through the stock speaker amps without issue, it's the sub amp thats the problem. but Kansas can correct me if needed.