UV resistant electric cable with black fabric lining.
Commercial Electric 11 in. UV Cable Tie, Black (100-Pack) GT-280STCB - The Home Depot
Amazon.com: Zip Ties 18 inch (100 Pack), Black, 60lb Tensile Strength, UV Resistant Cable Ties for indoor and outdoor use, by Tantti Supply : Electronics
Cat 5e Outdoor (CMX) Ethernet Cable - UV Resistant