First remove battery cables. Next remove fuses and make sure you have the diagram under the fuse box cover to replace them, removing them may not be necessary if you can access all retaining screws. Remove all retaining screws. Remove the three main power screws to the box. On the back of the fuse box carefully dis-connect the electrical connectors as they may have become somewhat brittle with heat and time. They are usually pinch type connectors. Then the fuse box should pull away.
Here are some diagrams to help you (below)
Please let us know if you need anything else to get the problem fixed.
Images (Click to enlarge)
Tuesday, August 22nd, 2017 AT 8:00 PM