Weird wiring

[Thommo68]

Hi all How's it going? I have read all posts and have not found my problem. Just installed a new Sony Headunit model CDX-GT4700. I am also trying to install some Sony Speakers model XS-GTF1625B 190 watt 2 way speakers into the rear doors I have the wiring diagram from this website (thanks). and follow all instructions but the problem is that the wiring for the back speakers is the same. At headunit the colors are correct but at the rear doors the wiring is the same color (brown/black yellow/blue).
How do i wire the speakers to make them work correctly?
What wiring is needed to add 6 x 9 speakers into rear parcel shelf?

Thanks for the Help

Thommo68

[kopper69]

You can use a multimeter to check continuity between the wires or try using a small battery, little 1.5V will do and hold one wire on one end of the battery and tap the other wires, one at a time, on the other side of the battery. When the speaker makes a noise, just a click noise, you have the two wires going to that speaker.

[TA 91 WA]

For the 6x9's, You will need to buy spacers/mounds for them.

Speaker wire stays the same for the 6x9's.

6.5's or 6's look neater but if you do want 6x9's, you can custom make a parcel shelf or you can buy spacers or mounds.

[Thommo68]

Thanks for the info so far.But what i need to know is why the wires are the same color in both rear doors (Brown/black Yellow/blue). .The wiring diagram says left rear speaker wires are Brown/black,Yellow/blue and the right rear speaker is Blue/orange Blue/Black but when i connect the speakers the brown yellow combination works out of the right rear door.I cannot find the other speaker wires with the Blue combination that are at the right rear door.The brown/yellow combination at the left rear door don't work.

[kopper69]

Maybe the speakers are sharing a common ground and just use a single positive to power each. A multimeter would tell you in no time.

[Thommo68]

Thanks The wirimg was actually dead so i just rewired the whole back door.