Yep Bill, I just posi-tap into the existing wiring for a switched 12V source for the running lights and tap into a ground wire. If the LED light also has brake and turn signals, just posi-tap into the appropriate wires. No need for a relay, very low current draw on LED's.
I ordered a Admore LED light kit for my Honda top case. So I will be doing this same exercise this upcoming week.
I just found a posi-tap assortment kit on Amazon and ordered it, also after much searching for an appropriate plug/connector for this, I decided to go with a simple P/S2 mouse/keyboard extension cable that has male and female ends...just cut it and splice it in.
Jerome, I found a YouTube video of a top box install and it was filled with great info. Search YouTube with "Honda NT700V Top Box Install". You'll see one by Jim Thomas that's 4 min and 27 sec. Jim doesn't say which Top Box it is but looks just like the Bestem Box with the Bestem mounting plate. We pretty much did like Jim explained in the video. He doesn't go into the install of the lights, though. Hope this will help you as much as it did us. Let me know how you fare. When we connected the lights, after we made sure they were all hooked up right, I soldered all the connections and dremeled a groove at the back of the seat for the wiring. I don't have any connections exposed to the elements and have barrel disconnects on the light wire that's inside the seat area.
Wanda P.
I also followed the video, but was not happy with the results I got, it was flimsy and I feel would ultimately damage the bike or box so I went back to the drawing board...
After looking at a few options, most no better, I decided the best way would be to simply order the Hondaline base and hardware for the OEM box and just substitute the Bestem base for the Honda.
Also, the Honda base plate can be used as a template to properly drill the needed holes in the Bestem (or any other for that matter) and get it exactly right on the first try.
I'll post pics, maybe even a video, once I'm done.