You'll definitely want to protect the ends of the wires from corrosion and water ingress. In this case, I might work some goop (glue) or silicone into the end of the cable to cover the little bit of exposed copper at the ends of the wires, and to fill the space around the wires inside the jacket.

Sunlight degrades plastics, so you'll also want the entire wire out of the sun, or at least the last couple of feet of wire.