The 9007 LED Bulb plugs directly into the factory socket, you do not need a relay harness with this LED Bulb. You can expect to get over 30,000 hours of life from the 9007 bulb. If color temperature is your trigger then you'll be happy to know that the 9007 bulb has a 6,000k color temp. The 9007 LED Headlight Bulbs have an integrated fan for cooling and a power output of 22 watts on low beam and 30 watts on high beam.