Saturday, November 19, 2011

Is a cars chassis part of the electrical circuit?

I'm doing automotive engineering at college, basically training to become an auto mechanic, Im absolutely fine with everything - except electrics.





Looking at a diagram of an electrical circuit/battery of a car I see that the negative terminal is connected to "earth" or to the cars body/chassis. Does this mean that current is flowing through the cars chassis to the electrical components? So if a cars body was not made of metal, nothing would work?





Why don't they just connect all of the circuits back to the negative terminal, instead of going through the chassis?|||yes|||yes. yes.





because it would add a lot of wire, and a lot of assembly time, and cost, and weight.





.|||in a negative ground system, the negative side of the battery is attached to the chassis.





everything is referenced to the chassis.

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