Wow! Great idea - I've been combing the internet for ideas and this one is damn smart. Really addresses my challenge of an over-full engine compartment on my 3.0 eco diesel. I do have this rigid felt-like cover on my battery so will have to experiment with that velcro. Did you fabricate the short jumper or purchase? (BTW - the solution I am focused on is negative disconnect between battery and ground). THANKS AGAIN for sharing....
I did fabricate my own, but I found this site where you can order custom battery cables. I've never used them and don't know anything about them. https://www.batterycablesusa.com/6-gauge-awg-ul-battery-cable-with-ends