Lights dim during vehicle turnover

[Boomin_tahoe 5,000+ posts]

It's been pretty cold here lately, past few weeks or so and noticed that whenever I started/turnover my s10, the interior lights/instrument cluster lights would dim pretty darn low. My guess is the cold weather affecting it. The wiring is literally the size of a #2 pencil. Once I upgrade the big 3 in it, it should go away. Am I right?

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[crosjr 10+ year member]

Big 3 will definitely help but could also be the battery. They lose a bit of power when the weather gets cold. Maybe have the battery tested for its CCA, might not be getting what it should be.

 

[n2audio 5,000+ posts]

You're hitting the battery w/150+ amps instantly. Why WOULDN'T the voltage drop a bit?

 

[Boomin_tahoe 5,000+ posts]

Big 3 will definitely help but could also be the battery. They lose a bit of power when the weather gets cold. Maybe have the battery tested for its CCA, might not be getting what it should be.

That's a good point. I plan on replacing it with a top mount one soon anyway.