So im trying to make sense of this wiring diagram : http://www.flickr.com/photos/56105745@N08/8916199642/http://www.flickr.com/photos/56105745@N08/8916199642/ by http://www.flickr.com/people/56105745@N08/, on Flickr

what's confusing me is the white wire that is coming from all of the fuse/circuit breakers and connecting with some sort of switch then going out. On my Sportster i have one white wire and see no switch.
There is a metal piece connecting two of the circuit breakers but thats it.
Heres my 2 front circuit breakers: http://www.flickr.com/photos/56105745@N08/8916204944/http://www.flickr.com/photos/56105745@N08/8916204944/ by http://www.flickr.com/people/56105745@N08/, on Flickr
Heres the back 2. You'll see that metal piece connecting the two circuit breakers.
http://www.flickr.com/photos/56105745@N08/8916205510/http://www.flickr.com/photos/56105745@N08/8916205510/ by http://www.flickr.com/people/56105745@N08/, on Flickr

Trying to figure out why my taillight and dummy lights went out.