I have been installing group 31 batteries from local truck repair place and making my own new stud type 2/0 cables whenever I do battery upgrades.

So far have done 1845 Case Skidloader, 2030 JD utility, 4040 JD, 4050 JD (all 3 of these went to single 1000CCA batteries instead dual battery setups) and 6620 JD combine.

I've used several of these that I got at a local auto parts supplier. Very heavy duty with locating pin.

This is the brand name that was on the box.

https://www.jnelectric.com/startpage.asp

Here is the product #

J&N Master Disconnect

240-22082

https://www.jnelectric.com/search?keywords=240-22082

Several older threads with pics. of my installs.

https://talk.newagtalk.com/forums/thread-view.asp?tid=655904

https://talk.newagtalk.com/forums/thread-view.asp?tid=749527

Couple threads discussing crimpers and supplies as well.

https://talk.newagtalk.com/forums/thread-view.asp?tid=680568

https://talk.newagtalk.com/forums/thread-view.asp?tid=685472

Combine install

https://talk.newagtalk.com/forums/thread-view.asp?tid=950852

My local source of these

https://newagtalk.com/forums/thread-view.asp?tid=1096872

Another

https://talk.newagtalk.com/forums/thread-view.asp?tid=784880