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**1project2many** · 07-27-2013, 07:03 AM

Anything that is supplied power from BAT can be run with the key off and imo is a potential cause for a dead battery. Hazards and brake lights are typically powered by BAT. Wipers on GM vehicles are powered by ACCY circuits. Turn signals are powered by IGN circuit. Each of these circuits should be fused separately.

07-27-2013, 07:03 AM	#5
1project2many Senior Member Join Date: Mar 2012 Location: Lakes Region NH Posts: 3,217	Re: Need help with GM column wiring Anything that is supplied power from BAT can be run with the key off and imo is a potential cause for a dead battery. Hazards and brake lights are typically powered by BAT. Wipers on GM vehicles are powered by ACCY circuits. Turn signals are powered by IGN circuit. Each of these circuits should be fused separately.