I purchased this extra transmitter after purchasing my second Harley-Davidson motorcycle. It's simple to install, if you are handy working on your vehicle. Adding the new transmitter is relatively easy, just follow the instructions.PRO:- It works.- No batteries to replace, no fob to carry around.- The product appears well built.- Easy to install, if you are handy around vehicles and wiring. Installation services are available.CON- I have to switch between high and low beam two times before it activates my door.I have friends that have used this product for years without any problems. I did have a minor problem with installation and found their technical support willing to go the extra mile to make me happy. I like doing business with people who are customer focused and F2P Technologies was very helpful. RECOMMEND.