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83GMCK2500 · 10-17-2013, 06:13 PM

Aux A & Aux B are NOT for connecting the battery. Those posts are there for things that you might ADD. There is a factory option or two that use them, I can't remember what right now. Camper/Trailer wiring is the most commonly added feature.

Give me a few minutes and I think I can have your wiring diagram. Help me out here, 350/454, 1500/2500?

10-17-2013, 06:13 PM	#5
83GMCK2500 Registered User Join Date: Sep 2009 Location: Beaverton, OR from WA State Posts: 1,515	Re: How do I correctly wire an auxiliary battery 99 Suburban using existing GM equip? Aux A & Aux B are NOT for connecting the battery. Those posts are there for things that you might ADD. There is a factory option or two that use them, I can't remember what right now. Camper/Trailer wiring is the most commonly added feature. Give me a few minutes and I think I can have your wiring diagram. Help me out here, 350/454, 1500/2500? __________________ Devin 1983 GMC High Sierra 2500, 4x4, RC/LB, 400 S.B., SM-465, NP-208, Corporate 10 bolt & 9.5" 14 bolt 1996 GMC Sierra SLE 3500 DRW, 4x4, EC/LB, Vortec 454, NV-4500, BW-4401, AAM 925 & AAM 1050 1997 GMC Sierra SLT 1500 4x4, Z71/F44, EC/SB, Vortec 350 My Introduction with my '83s History New Daily, the '96