Your car once had a rock-steady speedometer needle, but now it’s wandering a bit — or a lot. Maybe it’s not indicating any speed or it’s showing 60 mph and you know that can’t be right. “An easy way ...

If you've ever performed any kind of driveline or wheel and tire swap, you're probably familiar with speedometer calibration. By stepping up to larger tires and/or wheels, the speedometer reads slow ...

In the May issue, we addressed classic Mustang instrumentation from an electrical system standpoint-temperature, fuel, and oil pressure gauges along with ammeters. But what about the nuts and bolts of ...