full instructions as to how to install cobalt halo projector headlights.
Its under one of the headlights, though I can't remember which for the life of me...
With a 07 chevy cobalt key
in the trunk
It does not have one.
Connect a 12 volt battery charger to the battery.
No it will not
87 octane
.040
to the low side
13.3
100lbs
see your Chevy parts man.