Puting back in ECU/glove compartment?
 

Last year when my dad and I were trying to figure out what was up with my Supra, he took apart the glove compartment and ECU, to test if it was bad or not.
It's all up and running now, but my ECU is just hanging there. I can't seem to figure out exactly how it was mounted without getting in the way! It's really annoying. I've been looking for diagrams and such in the TSRM and on google, but no luck...

go to autozone buy a catalog/ bible as i call it, for your car its like 18.99 it tells you everything.

You can download manuals from these site
MK3 Supra Handbook (3.19MB)
1990 MK3 Supra TSRM Text Edition(51.4MB)
MK3 Supra Engine Fasteners(122KB)

it should run horizontal and you should be able to read what it says on the label (on the ecu) i think there is like three screws that go on some silver brackets.

I finally got it, thanks! The manuals didn't really have any good diagrams...but when you mentioned it's horizontal, i found out how it fits in the top left corner. It's screwed in together with the top of the glove compartment, so it's a bit tricky. Especially since you're trying to keep the LED light at the top of the compartment in place, also...
thanks :D