is there a diagram (online if avail.) that shows where the fusible links are located on a 90 SE?

I supposedly had one blown that was bypassed, and I would like to find it, as well as know where others are located.

They are replacable, aren't they?

 

There's a black box mounted against the driver's side fender that contains the fusible links - it's just in front of the airbox next to the battery. Lift the cover & you'll see the fusible links plus some fuses. Fusible links are replaceable.