Warning Lights - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Jack15T** · 08-23-2020, 09:52 AM

Hi Folks, My warning lights, temp and charging at the bottom of the fuel gauge don't illuminate with the key in the on position and the engine is off. They do illuminate briefly when the key is in the start position then go out when the key is released to the run position. Any ideas? Thanks, Jack

**dmjlambert** · 08-23-2020, 03:06 PM

That is the normal behavior. During start the bulbs give you a bulb check. There is a special circuit inside the ignition switch that provides that bulb check in the start position.

**Jack15T** · 08-24-2020, 12:17 PM

Quote:

Originally Posted by dmjlambert

That is the normal behavior. During start the bulbs give you a bulb check. There is a special circuit inside the ignition switch that provides that bulb check in the start position.

I like those kind of fixes. Thanks for the info. Jack

08-23-2020, 09:52 AM	#1
Jack15T Active Member Join Date: Jun 2018 Location: Sandy, Utah Posts: 102	Warning Lights Hi Folks, My warning lights, temp and charging at the bottom of the fuel gauge don't illuminate with the key in the on position and the engine is off. They do illuminate briefly when the key is in the start position then go out when the key is released to the run position. Any ideas? Thanks, Jack

08-23-2020, 03:06 PM	#2
dmjlambert Senior Member Join Date: Apr 2016 Location: Cypress, TX Posts: 3,561	Re: Warning Lights That is the normal behavior. During start the bulbs give you a bulb check. There is a special circuit inside the ignition switch that provides that bulb check in the start position.



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