Dan Heath wrote:
>Can someone please explain why connecting to a separate lug is of any >benefit when the entire system must be connected to the single ground lug on >the battery? It is all electrically the same thing, isn't it? > > All wire has resistance, and if it has resistance, it drops a voltage, so if you have two devices connected to the same wire, then when one is taking current, the voltage at the point where the two devices connect together will drop, this will interfere with the operation of the second device. This applies to the ground wire just as much as to the 12v wire. Think of bad hotel plumbing where the pipes are too small, the guy in the next room flushes his bog and you get gurgling in your wash basin I hope you get my point ;-))
