Paul needs help with the electric brakes on his cattle trailer. Click and Clack have lots of ideas but only one question for Paul: "How do electric brakes work, exactly?" Enlightenment ensues on this episode of the Best of Car Talk. And if you want to listen to more Car Talk, sign up for Car Talk+ Car Talk+ is the easiest way for fans to access more than 800 Car Talk episodes, wherever you listen to podcasts. Find out more at plus.npr.org/cartalk or find the Car Talk channel in Apple Podcasts.