Quote:
Originally Posted by DBSHELTON
I am now confused. So, on a positive ground system, would you install the disconnect switch on the + battery terminal cable or the - battery terminal cable.
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Lets break this down further. Pretend you remove the "+" and the "-" labels from the battery. At this point, it really does not matter whether it is considered a + ground or - ground when you connect the battery cables, -especially if the battery's current has been drained.
So if the disconnect switch is placed in the cable between the battery post and the chassis ground, even with the switch turned off, I can potentially lay a screwdriver (-or any piece of metal) on top of the battery and over to any component (frame, transmission, brake rod, etc.) and re-connect the ground to the system. Therefore having the disconnect in the ground cable is useless. Now if the disconnect switch is placed in the battery cable connecting the starter switch to the battery post, any short that happens on the opposite side of the switch (opposite side of battery post) can have the power disrupted and stop any short from creating a fire.
Does this help you understand??