Rivco Wire Sub Harness For Trailer Hitch This plug-n-play motorcycle trailer wiring sub harness for the Honda Gl1800 Gold Wing models is a simple installation. All it entails is simply unplugging the factory taillight from the factory wire harness and then plugging this sub harness into the mating factory male and female connectors. After this is done, you are now ready to plug in other wiring components. Features No splicing or soldering No damage to the factory wiring