I got the eastern beaver harness in the mail over the weekend and finally got it installed so I thought that I'd pass on some of the lessons that I learned along the way...
(1) the length of the 'short-wire' plug (socket #1 in their picture) is VERY short. It was very interesting trying to find a reasonable place to put it. I'm probably going to cut into the harness and extend the wires about 4-6 inches. It fit, but just barely.
(2) you have to remove the light bulb plugs from the stock harness to get them out of the bowls, and you have to remove the plugs from the EB harness to get them in the bowls. I used a very small L-shaped allen wrench. There's a little latch on the backside of the "B" fitting that you have to GENTLY pry down in order for the fitting to slip out of the plug. Slide the small allen wrench in the little square slot between the plastic housing the "B" fitting... Pry down towards the "B" fitting and you'll hear a "snap" and the fitting should easily slide out of the plug. You may have to push out the 'little latch' in order for the fitting to snap back in place again.
(3) Depending upon how much "stuff" you have fitted to your battery, you may have to find longer battery bolts because the connectors on the harness are small. I have several harness connected to my battery and the smallish bolts no longer worked.
(4) Using the "connector" that comes with the harness is the next best thing to sliced bread. Plug it into one of the two stock headlamp plugs and you're in business.
In conclusion...
The biggest hassle was figuring out how to get the plugs off in order to extract the stock harness. Once I had figured that out... another 5-10 minutes and I was back in business.
Definitely an easy mod. Hopefully, I've bought my last ignition switch, but only time will tell at this point.
BTW, I don't know whether or not I had said that Triumph warrantied my 3rd switch.