This is what I found from my 93 FJ. (1 Viewer)

[Nitecrawler]

When I remove the groove compartment to see my ECU, Guess what I found.
Someone cut the wire harness and unplugged.
Looks sort of amplifier. I had recently installed Double din JVC stereo and everything works.

 

[BILT4ME]

When I remove the groove compartment to see my ECU, Guess what I found.
Someone cut the wire harness and unplugged.
Looks sort of amplifier. I had recently installed Double din JVC stereo and everything works.

View attachment 2768625

View attachment 2768626

Factory stereo amplifier.

 

[MoJ]

Necessary to unplug when installing an aftermarket head

 

[Nitecrawler]

I see.
Thanks.