OP, I see you also went for the "permanent" install method. I'm not likely to ever sell my 2007 Vee, so had no problem chopping off one of the original H4 sockets.
That said, I kept the socket, and left enough wire on it that it could be crimped back on, just in case.
Did you get the Sumitomo heatshrink tubing to cover the Posi-Lock connections? That stuff is amazing. Also expensive. But amazing. I tucked the unused ground wire end inside that tubing, so it's sealed away snugly along with the Posi-Lock connections.
I converted to LED headlamps last winter. No evidence (yet) of the stock headlight wiring cooking my mult-pin connector. LEDs draw much less current than H4's so I didn't "need" the EB relay kit, strictly speaking. However, I did need to install the EB handlebar wiring extensions, and they pretty much require the relay kit. At least, it's a good idea. More elegant to have headlight power coming directly from the battery, anyway.
2007 Vee with too many farkles and 50k+ (s)miles