Nice job and good inputs from everyone. This has been on my 'to do' list for quite some time. I was thinking about putting the FZ1 on my little thumper but didn't have much room to speak of. I really like the location used in the above post.
For those of you like to run lots of big, power hungry lights, make sure you calculate carefully. I say this because the totally current handling capacity of the FZ1 is less than the sum of each 10A circuit within. Further, you can easily overload and individual circuit by connecting a pair of the big incandescents (Hellas, etc). I'm planning on going with the Denali LED's or equivalent, so that won't be an issue.
Also, for the guy who brought up the DIY, wire your own relay option, you might want to check the price of the FZ1 before embarking on the project. The no-nonsense, direct connections and and built-in relay along with the ability to change any of the circuits from switched to unswitched just my changing the repective fuse positon make it well worth the price, IMO.
