Honestly i'm not sure, I still have the factory tweeters. Let me know what you figure out though because i'm thinking of replacing them.

 

Hard to tell from the pictures, but it looks like green is connected to red, and blue to purple.

I don't know why Toyota does this (especially when the tweeters aren't even in the door), but it is common for them to wire the tweeter and door in parallel, but rather than bridge them in the harness, they bridge them on the tweeter side of the connector.

Most likely, you can connect the green and blue to your crossover input (mount the xover near the tweeter), then connect the mid output to the red and purple to feed the door speaker.

 

Yhank you for your hint.

You are bang on. Please check the video at 26.37sec.

No need too loop. Just hook the crossover directly there.

More info for anyone might need it.

Car Radio Battery Constant 12V+ Wire: Light Blue
Car Radio Accessory Switched 12V+ Wire: Gray
Car Radio Ground Wire: Brown
Car Radio Illumination Wire: Green
Car Radio Antenna Trigger Wire: Tan
Car Audio Front Tweeter Size: 1″ Tweeters
Car Audio Front Tweeter Depth: 2″
Left Front Speaker Positive Wire (+): Pink
Left Front Speaker Negative Wire (-): Violet
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Blue
Car Audio Front Speakers Size: 6 1/2″ Speakers
Car Audio Front Speakers Depth: 3″
Left Rear Speaker Positive Wire (+): Black
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Red
Right Rear Speaker Negative Wire (-): White
Car Audio Rear Tweeter Size: 1″ Tweeters
Car Audio Rear Tweeter Depth: 1″
Car Audio Rear Speakers Size: 6″ x 9″ Speakers
Car Audio Rear Speakers Depth: 4″

Credit to: http://my.prostreetonline.com

 

Harness that goes to tweeter. Just hooked up crossover

right front speaker + green stripped wire and - to blue stripped wire

left front + pink stripped wire - violet stripped wire.

Rest is easy. From crossover to tweeter and woofer.

 

Each tweeter is wired in parallel to the front door speaker in your Toyota Corolla.

If you change only the speakers, there is a link to intall front speakers in a Corolla.
http://www.toyotanation.com/forum/3...a-11th-gen-2014-scion-im-2016/1326313-how-upgrade-your-front-door-speakers.html

But if you change the tweeters you may have to intall crossover.
Some tweeters can't handle bass!!!
Without crossover to let only high frequency pass!!!
Tweeters will keep burning!!!

I hope this help
Sincerly yours