Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: Is this compatible in a 2005 Toyota Matrix?
Document: Bought a pair to connect to the front door speaker wires in my 1999 Toyota Camry. Despite the fitting guide listing the Camry as compatible, the harness is NOT. Do not purchase this product if you own a 1997-2001 Toyota Camry.
Maybe Amazon fixed this, but this is compatible with an 2010 pontiac vibe. It fitted perfectly. the plastic ends can be cut off if soldering is required
This don't fit my 2005 Camry (jbl) rear speakers, but they did fit the front speakers. It was a pretty good fit on the front speakers.
FYI-this harness is not made for the rear speakers in 2007 Toyota Corolla. It will work fine for front speakers.
I bought four for my 2010 Toyota Tacoma and they fit perfectly. They made for a clean install of my pioneer speakers.
Excellent adapters for my Toyota Prado wiring (front and back door). No need to cut any wire, just plug and play.
Does not fit on a 2003 Toyota Sequoia JBL unit. I ended up cutting off the old connectors and soldering the wires in.
I used these to install 6.5" speakers in the door of a 2008 Toyota Tundra. They work perfectly and were an exact fit.
much quicker than cutting wires, soldering, and heat sinking (the right way... not crimping!). I installed on a 2001 toyota celica
These were ideal adapters for our install of Pioneer door speakers, on our 2014 Subaru Forester.They may be designated for a Toyota, but fit Subaru also.
Answer: You can check on www.crutchfield.com if it fits.  For the toyota Matrix 2005 4 speakers, fits:http://www.crutchfield.com/p_12071035L/Metra-72-8104-Speaker-Wiring-Harnesses.html?showAll=N&search;=Metra_72-8104&skipvs;=T