In today's modern cars there are numerous computers through out the car that control almost every aspect of your driving experience. Utilizing a plug-n-play type harness is the best way to ensure that a perfect connection is always made. This minimizes install error (still very rare in my case) and in no way affects the integrity of the factory wiring.

Although dealerships are not able to void a vehicle's warranty, they love to intimidate customers with the possibility because of potential installer error and invasive wiring techniques. The plug-n-play harness eliminates that aspect altogether because it uses factory designed plugs that exactly mimic a factory wire connection.