Not a lick of sense to me.What would a few amps of headlight current do to warm a battery that a few hundred amps of starting current would not? Maybe your BIL is the GM engineer who designed GM's running lights on their pickups and Suburbans. You know, the ones running up and down the road with only one light working.:laughing:
Makes no sense to me either.
Instead of the woed "warm", insert the word "drain" and it makes perfect sense.
Because that is all it will do on a cold winter day. Help to drain the battery faster.
Allthough if it is indeed true, Maybe in the winter I'll start leaving my dome light on. That way the battery is already warm the next morning when I go to work:laughing:
Clinton did that to us DRL that is.
:confused2:...........Care to explain this intelligent quote......:confused2:......
"Intelligent....???" I am more confused than you are.
:confused2:...........Care to explain this intelligent quote......:confused2:......
On a side note I learned a trick using booster cables that when it is so cold out and your battery has only enough oomph to hardly turn over the motor that you can take your cables and for a half of a second short out the battery which apparently warms it up and increases the cranking amps. I've never had to try it since our batterys have always been up to snuff to roll the motor over.
Someone is giving you bad advice. Please be safe. Your family and TBN wants you around for many years.
MY BAD. A classic case of putting mouth in gear before brain is warmed up.