As AtomSplitter said...the install is really very easy if you take the time to read the instructions a few times and comprehend what they say. I raised my tank, disassembled the headlights as required, then sat there for a good 1/2 hour just mentally going through the instructions and matching those up with what I saw on the bike.
Not to confuse the matter, though...I do not recall having to cut the H4 terminals off as Atom stated...I simply unplugged the flag-type connectors, and then pulled the old connectors out of the back of the headlight bowls.
The only problem I ran into was trying to figure out what wires to connect the Posi-Locks to, as the instructions were pretty vague. To clarify, you will have to cut the stock connector off (under the tank), and attach the relay Posi-Locks to the wires as specified in the EB instructions.
Once the proverbial light bulb comes on as you read through the instructions and follow the wiring from the headlights back to the harness under the tank....it becomes very easy. And believe me...I'm no wrench or gear-head...just read my posts and idiotic questions I've asked.
And there is a tutorial with great pics on the forum somewhere...I just could not locate it, but I am sure someone can forward the link to you. Good luck and you will be very happy with the results.