Aftertreatment Fuse Keeps Popping when I hit a bump.

Hello-
Fuse L8 (aftertreatment) keeps blowing whenever I hit a bump.
I have not been able to find any skinned, or broken wires, etc. This seems like the obvious, or most likely cause, unless I've overlooked something.
Any suggestions on where exactly I should be looking. Could the bump in the road (no pun intended!) be coincidence and it's actually a faulty component within the system overloading?
Thanks in advance for any ideas on this.
Should be simple, right? Not so much.

 

Changed the wire harness to the pump. Now the fuse blows without hitting a bump.
Heavyd- you're an electrical whisperer as far as I'm concerned- any ideas on this fuse?
I don't have access to the Davie program so I'm going in a little (a lot) blind.

 

Goodysnap! I didn't see this until now. It just so happens I've just reached out to you via a different post altogether. I'll get that VIN ASAP. I'm not with the truck now. Please disregard my reply to that other post. It was such a pleasant surprise seeing you here. Thanks!

 

Oops- I'll send it over to your email.

 

Hello there-
If my memory is correct- it turned out to be a faulty cannon plug on passenger side, behind the step.
I haven't been on here in years- I'm a little late responding. Hth!