If the light does not work please be sure that the below steps were followed:
Make sure power flow to the wall outlet is 'ON'.
Check connections of all plugs. Make sure the charger connector is tightly plugged into the battery and the power cord connector is tightly plugged into both the charger and the wall outlet.
There is no sure way to tell if your charger is working unless you have a volt meter. If you suspect there is a problem with your charger, contact 'Power Wheels - Consumer Relations'.