Battery Grounds - Explanation?
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Battery Grounds - Explanation?
What are all the battery ground wires for? 3 wires on each negative terminal.
A couple of days ago I couldn't start. Not even a click. Discovered the battery grounds were loose and corroded. I took each out of the clamp, cleaned them and tightened --- except for one wire in the right hand battery. I started the truck but it immediately idled very rough so I turned the engine off and found the wire I had let drop. After connecting that ground wire, the truck ran fine. So does this truck have systems that have separate ground circuits? What are they?
A couple of days ago I couldn't start. Not even a click. Discovered the battery grounds were loose and corroded. I took each out of the clamp, cleaned them and tightened --- except for one wire in the right hand battery. I started the truck but it immediately idled very rough so I turned the engine off and found the wire I had let drop. After connecting that ground wire, the truck ran fine. So does this truck have systems that have separate ground circuits? What are they?
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All the systems on any veh are shared by a ground, electrons take the easiest return to the battery, and since there is a huge resistance caused by the missing ground, it takes the path of least resistance (thru other components until it gets to ground ) poor grounds can cause a horrible electrical nightmare, causing systems to run poorly, or not work at all
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So, it looks like each battery is supposed to have 3 grounding wires. And, it looks like they have separate ground distribution circuits. I notice one of these (from the auxiliary battery) services the pcm and injection pump (S109). I suppose that may have been the one I left unconnected and caused the rough run.
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