96 4runner
The door ajar light is on no matter what. If you switch the dome lights to door they stay on. I tried to narrow down which door it was by fiddling with the door sensors and eventually unplugged them all to find that the light didn't go out. When I bought the car neither the gauge lights nor the radio worked, so I installed a new radio and cleaned up the previous owners crazy stereo harness. The gauge lights and radio work fine.

That same day I removed the back door cover, messed with the lock linkage and lubricated the ˟˟˟˟ out of it. The back door opens now.

As I have unplugged 5 door sensors it seems that it's not a sensor issue. The radio is on the same circuit as the door sensors do i figure it must be something with that. All the wires in the radio harness are connected except an orange one which is a dimmer i believe. Disconnecting this one restored function to the gauge lights. The other is a gray and black that I've got grounded out(the door light is on whether its grounded or not), and a blue accessory wire that's not connected to anything.

Any help and advice would be great.