2000 Toyota Avalon Connector, wiring harness - 8282450110 Connector, wiring harness. 2000 Toyota Avalon. Genuine Toyota Part - 8282450110 2000 Toyota Avalon OE Wiring Harnesses & Stereo Adapters Toyota Avalon 2000, Wiring Harness by Metra®, with OEM Radio and Speakers Plugs. For factory stereo. This high-quality Metra wiring harness is just what you need to replace your defective or aged factory wiring harness.