Ok guys , I took out my pioneer radio to put the factory radio back in my 02 4runner. Because I threw out the radio that came with my truck , I bought a used factory radio off eBay . When I went to install, only one of the harnesses in dash fit into the back of the radio. My pioneer had a harness split from two plugs in the dash. Neither one of those fit into the other area on back of radio. The radio is from a 2001. Was there a difference from year to year. Thanks