Instead of splice and dice, and waiting forever on Aliexpress, I opted for this as a battery bank as well as bright lights.
https://www.amazon.com/gp/product/B086PVBJD5/ref=ppx_yo_dt_b_asin_title_o05_s01?ie=UTF8&psc=1
Call it overkill but whatever as I spent 1800 on 2 bikes but heres my security measures.
1.Kryptonite 1016 5ft chain for both bikes and bought into their 5yr anti theft program (caution kryptonite only reimburse 1 bike per chain)...