Anyone know what this is?? My guess is a aftermarket fusible link. I'm not getting any continuity

 

That is your Starter Diode.
It appears you have some electrical problems from the looks of that fuse box.

EDIT: After looking closer at the pics, it appears I was mistakenly taking the Dielectric Grease for possible melting of the buss bar.
Have you checked the connections and fuses on the bar.

 

It doesn't have any problems starting up. This thing was working perfectly a few months ago. Lol I'm about to sell this thing!!

 

And yes your right. Apparently this ranger has been underwater a few times lol

 

https://www.prcforum.com/forum/24-ranger-technical/57625-6-amp-start-diode-2007-ranger-700xp.html

 

The starter diode is there to protect the starter from current spikes.

 

I had to put this project off for a while but about to dive back into it. I'm getting 12v off one side of the plug to the negative side of the battery but nothing across the lines of the plug. I'm also now not getting any voltage to my radiator fan. Is there anything type of fuse tying the front diff and the fan together?? I checked the wires the best I could, but didn't see any cuts or burn areas.

 

The fan portion of your dilemma could be the 20 amp relay which go bad quite frequently or the fuse of course or the fan motor itself could be bad especially if the mo rons were plowing water with it. I would also be double checking the motor to chassis ground and the ground going back from the plug to the ECU. That starter diode will only show continuity in one direction as it's purpose is to keep the guys that hook up jumper cables the wrong way from frying up the Ranger.

The picture above is the 20 amp fan relay. Look for the big lump in the wire harness under the hood wrapped in black tape. You can take it to NAPA and match it up for about six bucks

 

Awesome, thank you sir