wiring harness protection | eBay Find great deals on eBay for wiring harness protection. Shop with confidence. Skip to main content. eBay Logo: 5/10M 4-25mm Braided Sleeving Braid Cable Wiring Harness Loom Protection Black. Brand New. $1 to $4. From China. Buy It Now. Free Shipping. BLACK SPLIT SLEEVE WIRING HARNESS LOOM FLEXABLE WIRE COVER PROTECTION FLEX. Basic Wiring Harness Protection - What You Need To Know The main protections every harness should have: The main power supply line from the battery to the rest of the system needs to be protected with either a) the correct gauge fusible link or b) a correctly sized max fuse. Each individual circuit within the wiring harness should be protected with the correct size fuse or circuit breaker.