Calibrating an old Peterbilt Speedometer | Setting the dip switches and checking the wiring

My speedometer was way off so I needed to calibrate it in my 1987 Peterbilt 362. The speedometer is not the original as the manufacturing date says 2001. So I have no idea how many miles are on this thing! But I need to get the speedometer working. In this video I’ll show you how I did it. How I figured out what series of Ametek it was, whether it is a 500, 700, or 900 series - this video can help. I’m not a professional, but its not too bad of a fix. My sensor is the magnetic pickup, so you just need to be sure to check out what system you have first and then follow the calibrations. Here are some important links. Information on Ametek speedometers: Technical information on calibration of the 900 series as done in the video: Technical information on calibration of the 700 series if you got one: