> Lance Camper Wiring Harness - Trailer Life Dec 16, 2012Lance runs 8g + off the battery jump terminal, through a relay, and back to the bed-plug for charging. Then ties the in-bed plug into the wire harness under the bed that runs power to the rear trailer wiring for lights etc. Negative ground anywhere.Topic: 2013 Lance Right Turn Signal - Trailer LifeTrailer Life Magazine Open Roads Forum: About to drillTopic: Pigtail from 7 plug to camper - Trailer LifeSee more results lance camper wiring harness | eBay Find great deals on eBay for lance camper wiring harness. Shop with confidence. Skip to main content. eBay Logo: Shop by category. Shop by category. Enter your search keyword Lance Camper 6 wire Plug Truck Camper Side 6 way harness NEW. Brand New. $37. Buy It Now +$9 shipping. Watch.