because i looked at my fuse thing, and it says the 7.5 is the backup radio
but there is a separate one for the ECU

im trying to reset my ECU after the installation of my SRI

and after i remove the fuse, am i supposed to let the engine run for about 15 minutes ?

 

The 7.5 amp backup fuse is for the ECU and the radio both (at least on a 94). Pull the fuse for about 15-20 seconds. When I reset mine after my SRI install, I let it run for like 5 minutes, and then I couldnt wait anymore so I went and drove it lol. It worked out well.

 

and i would know if i removed the correct fuse for the correct time because the engine would be all shaking and stuff
until the ecu relearns everything, right?

 

If you cant find the ECU here is the alternative:
Disconnect battery neg. cable
Open dorrs for 10 min. to ensure power is removed
Reconnect cable to battery
Start car
Let Idle for 10 minutes (DO NOT touch the gas @ all during this period)
Drive like normally and it will relearn it

There wont be much shaking @ all. Let us know how it goes!