What's up guys...need your help. I found this radio from a 1979 Toyota Cressida? Anyways I can't figure out how to wire to my 1975 FJ-55. The radio has 3 connectors, first (blue) has 2 wires with blk & wht , second has 3 wires with red & blk & wht, third has 4 wires with 2 blks & red & wht. Any help will be greatly appreciated! Thanks! Jon