Where is the 100amp fuse for the alternator - 2003 Toyota RAV4

blew up the huge 100amp fuse to the alt.
if new alt is born dead the fuse is blown.
or worst but lets hope just that huge fuse.
1 of these
top 2 if has 2 there is first check.
fuse 3 is for regulator,.
as you see they are ford only color coded

alt is bottom 2 wires. battery is left.

Bad wiper switch,all the best.

There should be a 100amp fuse in the main wire coming from the alternator, on the side of the fuse box, or in the box.

i have no idea as never seen this car but if this one of the big 100amp fuses then it could be the alternator --one of the diodes has failed draining the battery

The alternator usses two fuses - a 100amp maxi fuse and a 30amp engine injector fuse. You should have battery power on both circuits at the alternator with the key on and the engine not running.

There should be a 100amp fuse in the box near the battery for the main circuit between the alternator and battery. The engine computer controls output.
If the fuse has power you may need a shop to check the charging system.

you should more than likely go through all of your fuses and relays with a tester. if they turn out ok start looking for burnt wires

Did he connect the cables wrong? I would have the alternator tested. I've seen bad alternators blow there fuses. If the cables were hooked up backwards, it may have damaged the alternator.

you may have missed a fuse or fusible link , there is a 100amp alternator fuse and a 50 amp fuse on that circuit , location of those 2 fuses are (left side of engine compartment) also there is a fusible link in that circuit right off the positive side of the battery , those big fuses don't look anything like a normal if that helps , cheers'

To change the 100amp Alt fuse you need to get inside the fuse box. To do this remove the battery and then you'll need to remove the air intake to allow you to get to the screws to loosen the fuse box. Once you've removed the fuse you'll need to separate the top from the bottom, this can be done by inserting a small screw driver in the clips located around the outside of the box. Now you need to remove the screw on both the inside and outside which holds the 100amp fuse in place, the screw actually goes through the hole in the connector legs of the fuse. You should be able to see these holes in the legs of the new replacement fuse, so you know where they're located. It may be tricky but can be done, I've done it. Once you get both screws out the old fuse can be removed. Replace the old with the new fuse and reverse the process to replace all parts as before and you should have things running again. I did this with another helper as we were trouble shooting until we figured out that the legs were held by the two screws, one on each leg.