can leaving the lights on a car overnight ruin the alternator?

[m c]

in a new car

 

[racedriver456 fanning]

no it cant but it can ruin the battery i had a 78 Camaro that i left them on all night and had to buy a new battery

 

[Vince J]

It will put a heavy load on the alternator while recharging the totally depleted battery and in some cases where the alternator is already weak, it may contribute to its demise.

 

[G Y]

No it will just drain the battery.

 

[G Y]

No it will just drain the battery.

 

[G Y]

No it will just drain the battery.