Power Wheels Wrangler Jeep 12 Volt Wiring Harness | eBay Find best value and selection for your Power Wheels Wrangler Jeep 12 Volt Wiring Harness search on eBay. World's leading marketplace. Power Wheels Jeep Wrangler Upgrades! - Jul 27, 2011Use the power coming off the remote kill switch to the coil wires on this relay and have the power go through the main leads. 2) Lighted switches have a seperate ground wire for the lights that need to be run back to ground. The Power lead comes from the positive terminal block. The Load lead goes to the lights/siren.