Electrical Drain Question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**MySons68C20** · 08-28-2019, 07:44 PM

I went to start the truck yesterday and the battery was dead. After charging the battery it reads 12.4 volts with a running alternator output of 14.3 volts.
I checked for something left on and the only thing I noticed was the turn signals would stay on with no blinking once I hit the turn signal switch.
I went ahead and replaced the flasher with a new hd unit and now they blink/work fine.
My question is would a bad flasher cause a power drain when the engine is off?

08-28-2019, 07:44 PM	#1
MySons68C20 Senior Member Join Date: Sep 2014 Location: Wenatchee, Wa Posts: 982	Electrical Drain Question I went to start the truck yesterday and the battery was dead. After charging the battery it reads 12.4 volts with a running alternator output of 14.3 volts. I checked for something left on and the only thing I noticed was the turn signals would stay on with no blinking once I hit the turn signal switch. I went ahead and replaced the flasher with a new hd unit and now they blink/work fine. My question is would a bad flasher cause a power drain when the engine is off?



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