M1028 ground terminal block wiring question

[ALTOcal]

Hello,
I’m going thru my CUCV just be sure everything is in good condition. I found a large gauge/diameter wire from my ground terminal block that’s not connected to anything. I’ve looked thru the wiring diagram and couldn’t find its purpose. I’ve circled it in this picture. It’s just been hanging straight down near the exhaust manifold.

No electrical issues. The only modification I’m aware of is a manual override switch for the glow plugs.

 

[jcollings]

Here's a picture where mine was. and I cleaned it all up. along with the uninsulated ground wire that goes to the body of the cab. a little black wire that goes into the harness, and then that big number 2 gauge wire that goes to the negative buss bar

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[ALTOcal]

Perfect! I thought so, cause that’s about the only bolt it could reach that made any sense. Really appreciate the quick answer!