Below are links to fuse blocks that have a built-in relay to power the switched side of their fuse box. The one I like best is the one from twisted throttle. The reason is because all the secondary wire ends going to the accessories are positioned well within the unit offering better protection. It is important to note that each assembly has a total amp capacity (usually 30 amps), with each circuit having a max capacity (usually 10-15 amps).

http://www.fuzeblocks.com
http://www.bigbikeparts.com/template...1&GroupGuid=16
http://www.twistedthrottle.com/denal...or-motorcycles

A few years ago is the one I used. The disadvantage with this one is that I had to run an external relay to power the key side of the panel. Also, the secondary wires at the side of the panel are more exposed. Because of other fuse blocks available today, this is an example of one I would not use.

https://easternbeaver.com/Main/Wirin...PC-8/pc-8.html

Because fuse block have limitations (max capacity 30 amps), some Wings will require 2 fuse blocks. An example is one with full heated gear for 2, and trailer wiring, not to mention additional lighting.