This Spektrum Deluxe Receiver Switch Harness has 3 leads so that you can mount an external charge jack using the included bracket. All 3 leads use gold plated pins for the best possible operation and lowest resistance; ideal where higher than normal currents are involved. For those special projects and high end models this is your best choice for a switch harness that won't let you down. The plugs suit Spektrum, Jeti, Hitec, JR and more.