If your upgrading the rear speakers in a Toyota Camry 2006-2011 (XV40) that is equipped with the factory premium JBL sound system, this tip may help.
This is what the factory rear speaker should look like once removed.
As you can see there will be four wires pinned in the factory speaker harness.
You can easily identify the positive and negative wires by using a AA battery to pop the speakers, that is if the speakers are still functional. If you aren't familiar with how to test a speakers polarity with a AA battery, I will be explaining the process in a new post within the next day or two.
Once you have identified the positive and negative wires, for both the tweeter and the mid-range speaker cut the factory speaker harness off the factory tweeter and mid-range speaker. Leaving as much wire in tacked to the factory speaker harness as possible, you will need it to wire your new Alpine speaker.
I will be replacing the factory speakers with these Alpine Type E (SPE-6090) aftermarket speakers.
You will notice on most coaxial speakers the leads for the tweeter taped to the side of the magnet.
In order for these speakers to work properly in these vehicles you will need to wire the tweeter and the mid-range independently. Because the output going to the factory tweeter and mid-range speaker is already crossed over, if you just connect one pair of the factory speaker wires to the new Alpine speaker you will either get just the high frequencies or just the low frequencies playing out of your new speaker, depending on what pair you connect. You can't just connect both pairs of factory speaker wires together to get full range, you would need some sort of summing module. I have already identified the wires in this vehicle "Red" wire is the mid- range speaker negative and the "yellow" is the mid-range positive. You can then cut the tweeter wires off the main terminals on the new Alpine speaker.
The wire with the black stripe on the left of this Alpine speaker should be connected to the negative tweeter wire, which should be the "Black" wire coming off the factory speaker harness. Then connect the last wire which should be the "Green" wire coming off the factory speaker harness to the wire coming off the small capacitor mounted to the side of the Alpine speaker.
If needed use a couple small zip ties to keep everything in place.
It's now time to plug the new Alpine speaker into the vehicle and secure it using some new mounting screws. Now just repeat the process on the other speaker, the factory wire color on the speaker harnesses should be the same on both sides.
-Jeremy's Car Audio Tips
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