The 12 volt system battery ground strap originally went to the left rear bolt holding the battery box on the housing, it looks like in the pic in the 1965 Cub and LoBoy operator's manual.
Below is the page.
http://farmallcub.com/rudi_cub/www.clea ... age-25.jpg
The battery can't sit on the ground strap at all at the rear, it could wear through the battery case.
They have said on here that the original ground strap is made so it can go under the battery in the space that there is.
The battery it originally uses has the posts on the left side, with the positive post at the front.
The positive cable goes out the hole in the battery box shown in the pic, and then down under the platform, and forward.
Below is a pic of the cable at the battery box.
The 12 volt Cubs have no nut and bolt at the battery box hole to the front of the cable hole.
That is where the 6 volt system ground cable connects on the battery box.
The hole is just open on the 12 volt system, I think. You can look on your Cub, and see if there is a hole there.
Below is a page from the same manual showing the 12 volt electrical system in the upper pic on the page. You can see how the battery cable is connected at the starter.
Disregard the 6 volt battery pic on the page. The manual is made for 6 volt and 12 volt Cubs and LoBoys.
http://farmallcub.com/rudi_cub/www.clea ... age-26.jpg
Thank you. That clears up another question I had.
From the looks of things, my battery is in backwards. Although the positive terminal is at the front, it's on the right side of the tractor. Therefore the positive cable is too short. And it won't let the battery sit rearward far enough to fit into the box. I intend to build new cables anyway.
So I'll Turn the battery around, face the positive toward the back of the tractor, let the ground cable come under the battery (it's the stockish flat type) and come up the front of the battery onto the ground terminal, and let the positive come through the hole to the positive terminal. That positive wire may be too short to reach anyway, but I need to make up a new one anyway as this one is old, hard, and inflexible.
I'll add this to the work list for next month. I'm out of money for this month!