99Sierra
Newbie
When I purchased my '99 Sierra, it was equipped with a dual battery setup. I'm assuming the previous owner did this when the winch was installed. I've also read here that a dual battery setupo could be ordered from the factory as well. I'm trying to understand how this all works but I'm a bit confused. Here's a diagram of what I see under the hood:
The negative terminal on the left battery is grounded, and a second wire from the negative terminal runs to somewhere near the exhaust manifold on the passenger side - I can't really see where it terminates. There are three wires coming off the positive terminal - one to the alternator, one to the fuse box marked "Fuse Relay Center" on the driver's side, and one to somewhere towards the front of the engine block. Again, I can't really see where this terminates.
The right battery also has a ground coming from the negative terminal, and positive is wired to the Fuse Relay Center box. The winch is also hooked up to this battery.
I'm just not sure what I'm looking at with the unknown wires coming from the left battery. My best guess is the unknown negative wire on the left battery is going to a ground elsewhere, maybe the frame? Not sure what the unknown positive wire is. Does this look like a typical dual battery setup or could someone shed some light on this type of setup?
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The negative terminal on the left battery is grounded, and a second wire from the negative terminal runs to somewhere near the exhaust manifold on the passenger side - I can't really see where it terminates. There are three wires coming off the positive terminal - one to the alternator, one to the fuse box marked "Fuse Relay Center" on the driver's side, and one to somewhere towards the front of the engine block. Again, I can't really see where this terminates.
The right battery also has a ground coming from the negative terminal, and positive is wired to the Fuse Relay Center box. The winch is also hooked up to this battery.
I'm just not sure what I'm looking at with the unknown wires coming from the left battery. My best guess is the unknown negative wire on the left battery is going to a ground elsewhere, maybe the frame? Not sure what the unknown positive wire is. Does this look like a typical dual battery setup or could someone shed some light on this type of setup?
You must be registered for see images attach