Originally Posted by czjeeper
So while trying to get my brother's '92 YJ started, I noticed that the IOD fuse (15amp) keeps blowing.
What circuit does this regulate?
Any idea why it pops the second we try to start it?
Will this fuse keep the Jeep from starting?
You must have a short in that circuit. The IOD circuit usually powers items like radio memory IIRC. Pull the IOD fuse and test each side of the fuse socket with the key in the ON position. One side should not have voltage. If it does then you have some sort of voltage feeding back
to the fuse as well as voltage feeding to the fuse. What (re)wiring did you do recently?