1940-1957 Chevy and GMC Truck Tail Light Wiring Covers.  Check out these stainless steel flexible wire jackets. They are about 1/2" OD, 3/8" ID and 12 "long. The slip ring is about 3/4" ID. The listing is for 2 pieces as shown. I also have 1/4", 3/8", 1/2" and 3/4" available in 10" bulk lengths. Isn't it time to hide that ugly wiring?