The Yamaha Navitas 600-Amp 48-Volt Controller is the pinnacle of performance controllers for golf carts. The amperage is not seen higher anywhere else, especially with the user-friendly aspect that makes this unit a must-have. This kit comes with a Yamaha 48-volt 2008-up harness for plug and play installation with the stock system. You read that right; it plugs in. No cutting or splicing is needed on this kit, just slap it on and take off running.It is considered a direct replacement for the stock controller as it plugs directly into your cart's existing wiring harness. Do not forget to look at the on-the-fly programmer that is sold separately but will allow you to dial your performance in specifically. The regen braking can also be adjusted with this handy little tool. Your neighbors will wonder what magic elixir you put in your golf cart's batteries or what crossroads you went to at midnight. When they ask, just tell them that you shop for all your parts at Buggies Unlimited.