Single-Lamp Harness - With Switch (Utility Series, 12V) This product allows for the operation of specific lamp via an on/off switch which can be mounted inside your vehicle This single-lamp wiring kit is designed for wiring E-Mark approved Lazer Lamps utility lights. The setup has no configuration procedures and is quick and easy. This kit comes with a 12V relay that is fully waterproofed with a 10A fuse on a 4m long cables. All Lazer lamps are sold with a pre-wired female connector attached to the male connector of the lamp harness, to facilitate wiring in to your vehicle system.