Jeep Chassis Wire Harness - Engine & Transmission Wiring Without each vital Jeep wiring harness, your rig would not have the power or information required for operation. Time and exceptional travels cause wear, tear and damage, and only the best quality Jeep Wrangler wire harness replacement options provide the clout your machine requires to successfully dominate wooded trails and plow over gnarly sand dunes. 2007-2018 Wrangler (JK) Wiring Harnesses | Quadratec 2007-2018 Wrangler (JK) Wiring Harnesses. Filter Results. x. Brand. Crown Automotive (6) Trigger Under Hood Mount for Trigger Solid State Bluetooth Relay Switching System for 12-18 Jeep Wrangler JK. Crown Automotive Wheel Speed Sensor and Fuel Injector Wire Harness for 97-18 Jeep Vehicles. $19. Tuffy 12V Power Source Outlet.