While I post and support this site, I also am now the Mastermariner for 2100SC's. at http://www.maxumowners.org/
I guess Captain Billie bestowed this honor on me with all the work I have been doing in trying to obtain an accurate wiring diagram for the 2100. I am now assisting Brunswick family of boats it trying to get the manual correct.
I would be interested in knowing if any owners of this model have looked up under the dash at the fuse block and counted the fuses. My boat clearly has only ten fuses in a 5x5 arrangement, while the documentation shows a 7x7 arrangement and 14 fuses.
At the link I have listed I post pictures of improvements for the 2100SC, they can be found in the column on the left side at the bottom where it says Personal sites.
Hope this is helpful.