Check out this site : http://www.installdr...yota-Wiring.asp It has the Camry wiring info. Don't cut the original harness, you can buy an adapter from Super cheap Auto that plugs into the Camry harness, then you join those new wires into the new Stereo wires. Works better if you solder the connections too. This tells you how to remove the dash etc. to swap over the units : http://www.installdr.com/InstallDocs/Toyota/PDF/869037.asp Cheers