JBL Sound System Wiring Diagram

I am installing amps and speakers to an exsisting JBL audio system. Keeping the stock head unit, I need to know what color are the wires to the left rear speaker so I can get a signal for my audio control line converter. Anybody know the color of the wires for the left rear channel going into the JBL amp?
thanks
Chris

 

IIRC, toyota uses red/white and black/yellow for the rear speaker wire colors.... at least on non-amplified systems, but those are the speaker-level wire colors.

Here's a link that came from TN:

scroll down to the Audio System (Separate Amplifier Type) link and good luck... What I can tell from the schematics is that there is no Front/Rear output from the headunit - it's done internally by the amp, but on the second page you can see there's a Red/Green/Black/White (L+ L- R+ R-) shielded cable setup.

The best answer I can give you after seeing this - you still have to use the factory amp to get front/rear fade control, and use a Line-Out Converter to reduce the amplified signal before going into your new amp.

Maybe I'm wrong, but I feel pretty confident with that.

 

The colors are all standard. Any newer model tacoma wiring diagram will do. I did it awhile back. The only real key difference is the wiring into the harness for the head unit.


Its not worth it though. You should ditch the JBL amp. I eventually did.

 

I could be wrong again, but I believe he's trying to keep the fact HU, and ditch the fact amp by using an aftermarket one.

The result is the same still though.... whether it's the factory headunit or the JBL amp, they both need to be dumped and replaced.

 

I'm not going to use the jbl amp I have a 1000 fosgate amp 2 IDQ 10" custom box 4 channel JBL amp and all infinity kappa perfect speakers for mains. my issue is I don't want to remove the head unit, I just want to pick up a signal from the head unit going into the JBL amp, usually it's the Left Rear channel, I have no idea what colors they are! Need help!
thanks