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Old 10-17-2013, 05:51 PM   #4
Mr_Rich
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Join Date: May 2006
Location: Santa Maria, Calif.
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Re: How do I correctly wire an auxiliary battery 99 Suburban using existing GM equip?

It's actually for the camper package. The diesel trucks also had an aux. batt. for other reasons, I think. There's an extra 10 ga. lead that goes from the aux. batt. to the terminal under the plastic cover on the pass. side firewall.
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