![]() ![]() This voltage drop or “transient” might last only a few thousandths, hundredths, or tenths of a second and you might not even notice it. A 5-amp solenoid may draw many times that when engaging, causing a momentary spike on the power and ground buses where it’s connected. While an electric motor or light bulb might draw 5 amps when it’s running, it can draw much more current when starting. Problems can occur when an electronic device and an electrical device such as a motor or solenoid share a common electrical path (power, ground or both). Wire size is important to prevent voltage drops or voltage “brown-outs”, but the way the various instruments and electrics are connected and the connection paths are also critical. The way that power is distributed between your electrical systems and your electronics can be critical to the proper operation of your electronic devices. We often see beautiful wiring jobs that do not follow these basic electrical engineering practices, leaving the customer with problems at the track that waste thousands of dollars in missed runs, or even damaged components and engines! If this is the case with your installer, then get ready for problems. However, many think that a ground is a ground and power is power, as long as it turns on/off then the job is done. Some wiring guys or shops know what they’re doing and do nice neat work that also follows the techniques outlined here to insure a proper install of all your equipment. This has forced us to rethink the way the cars are wired and to consider basic electrical principles like Ohm’s Law. put an extremely high demand on your car’s electrical system. This combined with other systems in your car like solenoids used to control converters, nitrous, boost, etc. Ignition boxes can easily pull 40 amps or more from your electrical systems. This powerful spark, requires powerful drivers. To fire the cylinders under these higher pressures, modern ignition systems are more powerful than ever. To create more horsepower, cylinder pressures must rise. With the never-ending quest for more horsepower and faster cars, today’s racecars have more electronics than ever. ![]() PLEASE DO NOT ASK WIRING QUESTIONS IN COMMENTS OR EMAIL US WITH QUESTIONS. THIS ARTICLE IS SIMPLY FOR INFORMATION PURPOSES AND IS SUBJECT TO DEBATE, WHICH WE WILL NOT GET INVOLVED IN. PLEASE NOTE: WE CANNOT ANSWER WIRING QUESTIONS OR ADVISE YOU ON YOUR WIRING. ![]()
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