1999 Toyota Avalon Radio wiring Help..

[Tundrav8yamaha]

I Need advice on The Radio wiring for a 1999 Avalon. My question is when your going from the (standard) am/fm cassette with 7 speaker ([/b]package) with Fm diversity reception to the Premium 3 in 1 am/fm etr/cassette/cd the wiring doesn't match the Toyota model number 16810 head unit . I know this radio goes in the Avalon for that year but I have two problem's the wiring doesn't fit the head unit and the Fm diversity reception on the original Avalon radio has 2 input vs one input like the premium system has ????? Help please
pictures being provided please stand by..



New radio model 16810




Old radio picture below



wiring issues



This wiring is from the Car to the Factory head unit (avalon)



back of the 16810 head unit