The newest I have done is a 2016 and I have the above tester. I have found that any thing with a magnet works. eg. old trailer magnet, 6.0 throttle valve motor, speaker. Depends what kind of feed back your looking for. I took a trailer plug and some duplex wire so I can put it in the cab and go for a ride if needed. I like the motor because I can watch the speed increase and also put a amp clamp on it.