How that solves the placing of the B junction? If I stay external, the box I have is not good. I can move the battery let say on the seat tube, can you explain what am I solving by that?
If you mean to use the internal B junction and to follow what Omiar said so the box will seat inside the frame and the battery wire will run up inside the seat tube but then where and how I hold the battery there, what do you mean under the saddle.
on the frame i had last year, i drilled i little hole in the top of the seatpost, so i could have the battery tucked in under the saddle, where you couldn´t se it if you didn´t search for it. i just straped it in with some Zip tie , of course, i had to cut the Zip ties every time you will charge the battery, but what is that, 1-2 times a year?