Look to your right next to your accelerator pedal. When you find the fuse box, if you look at it front on, it will be on the far left bottom corner.
I am assuming you mean where is the fuse box which contains the radio fuse located? It's behind the driver's side kick panel. The radio fuse is a blue, 15 amp fuse. On JDM MR2's, it is the last fuse on the bottom left row.
Beside the drivers foot rest area, there is another fuse box located.
fuse for the speedometer on a 1986 mr2
its located above the passenger fuse box next to the clutch the top relay above the 3 other relays.
when sitting in drivers seat, it is in the kick panel near your left foot behind where the front hood latch is and up slightly higher. its a small fuse box, one of 3 on the mr2 mk2
There is no 100 amp fuse powered by a 12 volt battery. There is because it's blown! This fuse is in the engine bay and is secured by 2 M10 set screws accessible after the battery is removed. These are likely to be corroded.
On the gear box next to the starter.
First fix whatever the problem is. That alone oughta turn the light off. Otherwise, either disconnect the battery for a minute or so, or remove the 15A EFI fuse #12 in the engine compartment fuse box for a minute or so.
I have a 2002 MR2 Spyder. The tail light relay is behind the fuses box on the left side of dash S H
one solution is to check the 2 prongs in the lighter unit..sometimes they get pushed apart and dont hold the lighter in place to heat up...push them back together and it should work fine, but dont push them in 2 far or they wont let go of the lighter once its heated up.
under the steering wheel on the left side wall that's where you will find them But, hopefully its just the fuse could be wires or both motors (unlikely) my passenger window doesnt work unless both switches are used perfectly in sync... my car is wierd