Thus when referring to an electrical ballast, we mean an electrical device that plays an important role in maintaining the stability of the electrical circuit. However, the question you may have is how does it provide the stability? Some electric ballasts limit current while some limit voltage, depending upon the circuit in which they are used. By doing so, they reduce the risk of either over voltage or over current in the circuit and thereby enhancing the stability of the system.
The typical automotive ignition system prior to consisted of a coil and ballast resistor, with breaker points to interrupt the current flow when a spark was needed. The job of the ballast resistor was to inhibit current to a level that would not overheat the coil. This simple system is easy for even the novice mechanic to wire. So if you have a classic car with missing ignition components, don't hesitate to replace the coil and ballast resistor yourself. Disconnect the negative terminal of the battery, if there is one installed on the car. Route one end of the wire from the engine compartment into the passenger compartment. Connect it to the ignition terminal of the ignition switch.
Prior to the mid-to-late 70s, ignition points and a condenser were used where now the electronic ignition module and the ballast resistor have taken over. The duty of the ballast resistor is to limit voltage to the ignition coil. This added longevity to the coil as well as protected the ignition system from over-voltage.
Remember Me? What's New? Results 1 to 7 of 7. Thread Tools Show Printable Version. Hey guys, having a few difficulties with my KE36 pano, Now its got a stock 3k and all that, now when I got the car the coil had been removed, therefore I have no idea where wires go lol, I have a 4 Pin relay hooked up, its got earth wire, 12v battery wire, and a wire going to positive side of coil, now the coil is getting really hot when i connect battery Resistor not working?