This is a very easy installation. I've got a lot of great info from this site so I hope these pictures can help some one else.
The EB ABS bypass adactor comes with factory connectors on one end to tie into the ABS connector and slip on connectors for the switch on the other end. The cost is $11.95 + shipping. I also purchased a 20 amp switch. EB recommends a heavy duty switch of at least 15 amp capacity. The cost is $9.95 + shipping. Shipping costs from EB are very reasonable, especially coming from Japan.
I wanted to have full access to the connector area so I had to remove my Givi luggage racks to get the side body panels off. After that it's just a matter of identifying the right connector to plug into. You could do this installation without removing the body panel, but it will be a tight reach. On the left side of the bike, near the battery positive terminal is the connector you're looking for. I have a 2009 Wee and the connector on my bike is white. You want to use the connector that leads to the 25A ABS fuse.
After I made the connection I put the seat on and went for a quick ride to be sure I had the right connection. You can turn the ABS off any time and when you turn it off, the ABS light remains lit. To turn it back on, you have to turn the bike off, flip the ABS switch and re-start the bike.
Once you get the proper connection, it's just a matter of determining a location for your switch, running the wire and connecting it to the switch. I decided to locate my switch on the flat area of the fairing to the left of the dashboard.
I drilled a hole to accomodate the switch and then installed the switch before connecting the wire to the switch. I ran the wire behind the frame following the factory harness and my GPS wire. I wasn't comfortable running the wire to the steering head and then spanning the gap over to the left fairing. I ended up running the wire along the bottom of the left fairing where there is a large groove in the body panel for another harness. The wire then runs up the inside of the fairing to the switch. This kept the wire away from any interference with the handlebars.
That's about it. I've also installed a left side Powerlet socket, and the 3CS Circuit, both from Eastern Beaver. I like Eastern Beaver products as they're well made and the connectors plug right into the factory connectors. They look and perform like they came from the factory.