Start with the turn signal circuit. You do have a schematic, right? No? Get one. Now. Okay, read the schematic. Start by metering from the supply side. A good place to start is the fuse box.

A booklet is also included that has the popular Ford, GM, and Chrysler charging and turn signal circuits drawn out as well as basic light, ignition, and dash circuits and some helpful hints.

Inside the project boxes you will find the 9v battery that powers the circuit and also a breadboard that is home to the circuits responsible for blinking the turn signals.

Do you flick on your turn signal and hear one — or even both of your blinkers — tick faster than usual? This isn't some new gimmick with your car. It indicates that there's an electrical issue ...