Lights Flash When Cold

[DDudgeon]

OK guys, with winter approaching I know my lights are going to begin flashing. It seems when the temperature drops to 50* or below my lights will flash for about two minutes after initial startup. Is this common with all the first generations? Any ideas where to begin? Help greatly appreciated

 

[bgilbert]

Yes very normal operation. We have intake air grid heaters in our trucks. Two cycle, prestart and post start heat. Prestart, when temps are below 59*f, they will cycle, wait to start light comes on in dash. Post start, the heaters will cycle after truck is running until intake temp reaches a certain temp, which I don't know at the moment. Post heat cycle there is no WTS light on, only effects of it, lights dim, voltage gauge swings, they draw a good amount of juice. BTW welcome to the TDR!! Need to get yourself a signature, so we know what ya got.

 

[MFalkinham]

It freaked me out the first time it happened with my truck, but it is perfectly normal. In fact, it's a great indicator that lets you know that your grid heaters are working OK and are drawing that current away from the headlights.



- Mike

 

[DDudgeon]

Thanks guys. So how do I set up a signature? Dont laugh I'm a rookie

 

[DDudgeon]

OK nevermind, signature showed up that time