Used with a LED Light to simulate that the original light bulb is installed. Easy to install. Keep away from plastic or painted surfaces, resistor gets very hot. Includes 7" of 20 awg stranded Teflon wire. 2 wire crimps included. Use one 6 Ohm equalizer for each LED bulb, or use one 3 ohm for 2 led bulbs for each turn signal control side that you replace. Use one 20 Ohm or 100 Ohm for each side marker. For a 6 Ohm load equalizer you can attach up to 1 LED light per equalizer. For the 3 Ohm load equalizer you can attach up to 2 LED lights per equalizer. Load equalizer dimensions are 0.75 inches in length and 0.42 inches wide. (3 ohm equalizer is slightly larger). No special tools needed just a pair of pliers. The connection is made using insulation displacement connectors.