[Duh-rango]

Welcome to the forum. Looks like it would be a ground strap to the engine, which I assume is a 3.6. What year?

Or could also be a ground strap to heat shield as I think the loomed wire might be for the engine?

When removing the engine this is the only strap that I see the FSM says to remove.

 

[Duh-rango]

Apparently this has been discussed before.

2012 Durango Ground wire disconnected?

The wire in the red box is not connected. Any idea where it should go?

www.dodgedurango.net

 

[Duh-rango]

Search box? What search box?

Actually did a google image search with durango 3.6 ground strap and saw an image that was similar to the OPs which I then noticed was posted on this forum.

I am too lazy to go to the garage and take an image but from the FSM alternator removal instructions it looks like the ground strap is shown but not where it terminates on the block.