I’m trying to clean off my workbench and my radio wiring notes are front and center. not sure if this will help as I have an 88 FJ62 - and wiring is probably maybe a little different but process of elimination??
In mine owner 2 had removed OEM stereo and hardwired at time new harness .
Me ; Owner three had to cut out previous harness and start from scratch to do full update of speakers amp subs
I found that the wiring actually changes color throughout the vehicle - like the factory wiring for the stereo /speakers/ battery etc in the dash only remains those color for a few inches and then it changes again, depending upon where it’s going in the vehicle … and it was very confusing
Makes matching up to an updated harness a bit of a challenge where the colors are “universal”
So going over my chicken scratch, which time made so much sense now who knows lol
blue wire with the yellow stripe goes to your yellow wire (constant) on a modern harness.
Black with yellow dashes goes to the green and black harness for rear left ( which change color in the fj62 maybe 60? To a black wire and a yellow wire then to speaker in my case blue and gray)
Gray with yellow goes to red 12 V switched ignition
Brown with blueish greenish dash goes to black ground
All Blue is connected to remote wire which goes to amp. Amp has wire from unit to battery with inline maxi fuse.g