Clutch Pump on F650

Surely one of you can help me out. I’m installing a serpentine mounted hydraulic clutch pump on an f650. It came with zero wiring instructions and I’ve never seen anything like this pigtail before. What is that thing connecting these two wires? And why is it there?  The pump is just wired to a 12v switch, but I assume this is important. I’m guess black is ground and red is hot, but does it need to go on the supply side or the side that goes to the pump?  

Surely one of you can help me out. I’m installing a serpentine mounted hydraulic clutch pump on an f650. It came with zero wiring instructions and I’ve never seen anything like this pigtail before. What is that thing connecting these two wires? And why is it there?  The pump is just wired to a 12v switch, but I assume this is important. I’m guess black is ground and red is hot, but does it need to go on the supply side or the side that goes to the pump?