Front Door Speaker Adapters and Speaker Wire Harness For select vehicles only. For front door speakers. Save time when installing aftermarket speakers. Made specifically for most 6.5" and 6.75" aftermarket speakers- usually about a 5"-5.25" mounting diameter. Sometimes need to sand/shave/file plate to fit certain speakers which is normal. Speeds up installation time. Made from high grade plastic for a long lasting secure fit and corrosion resistance. Speaker wire harness speeds up install time and prevents cutting into the factory wiring. Compatible Vehicles: Toyota: 2003-2007 Sequoia, 2004-2006 Tundra Crew Cab