Stop Guessing. Prove the Next Move.

The battery is dead every morning, but the battery and the alternator both test good. Something in the car stays awake all night and drinks the battery down. Walt and Grem track the draw with one meter, one fuse at a time.

This car is on its second alternator in a year, and the second one just tested bad too. Walt shows why the alternators are not the problem: the cables and connections feeding them are. Ray, who works the parts counter, talks about the ones that come back over his counter.

A truck keeps killing starters, and every part on it tests good. Walt runs a voltage drop test on the starter circuit while it is working, and the meter finds the power that never makes it to the starter. One bad connection, proven, instead of a third new starter.