where can i find information on how to build electrical circuits in a car electrical system?
How to use relays, LED's, switches in the circuits and how to know what voltages, etc are needed to engage the relay on the switch circuit.
trying to find a book on this is going to be hard. because most of the information found (like at the library) is broken up. the way i learn about circuits and ohms law was i took a semester of electrical engineering. in a community collage.then i when