Always do a physical look see on the battery case and find the word "NEG" or the symbol "-" and this will identify which terminal on your battery case is the NEGATIVE frame ground terminal. The negative terminal cable always goes to the frame ground connection which should be very close to the battery install location.
These days it is hard to follow always having these terminals in the same spot when you change out batteries. The different company and even the same comp[any may have the terminals at different locations for different years.
So easy to get them installed in REVERSE POLARITY order.
I do alot of battery cable projects here it seems so I ended up getting one of those 8-ton hand HYDRAULIC crimper tool kits that comes with all of the various ring terminal DIES for all of the wire sizes. I use ANCOR battery cables and ring terminals from ebay sources. The 8-ton hydraulic hand crimper sells for around $60 ebay/amazon/harber freight etc...
It is VERY IMPORTANT to have good SOLID crimped on ring terminals especially on the heavy current carrying battery terminals.
Just my thoughts...