It provides it with electrical energy.
Alternater
Well there is 2 ways to check....it could be your alternater or your battery....to check to see if it is your alternater pull of your positive cable and if the car dies it is your alternater if your car don't die then it is the battery and you might want to get that replaced
you have a bad alternater or belt
It is not where the housing is. You have to lift car and its behind alternater.. not easy but possible
WORKING FROM THE FRONT; YOU NEED A SIZE 17 SOCKET ON A TBAR.THE ALTERNATER IS ON DRIVER SIDE AT THE BACK.THERE ARE THREE BOLTS TO LOOSEN (DONT TAKE THEM RIGHT OFF) . PULL THE ALTERNATER TOWARDS THE FRONT OF THE CAR, SLIP BELT OVER CRANK PULLEY THEN OVER ALTERNATER PULLEY .LEVER ALTERNATER BACK TO TIGHTEN BELT,THEN RETIGHTEN 3 BOLTS
The p/s filler cap is below the alternater between the engine and firewall/bulkhead on passenger side of car. About 10 - 12 inches below the alternater.
check and make sure water is not getting in ur alternater cap
battery weak or alternater is not charging battery. a fully charged battery should read at least 14.5 volts running if alternater is charging.with engine off the battery should read about 13 volts,
A car battery's function is to store electrical energy for your vehicle. When you start the car the stored energy in the battery turns your car over and once your car starts the alternater will power everything and recharge the battery.
alternater problem i found on my car
while the car is running unhook the negative battery cable. If the car remains running then your alternater is good if it stalls then replace it.
one thing it could be is the alternater. a good way to find out is to recharge your battery and when you turn on the car, while the car is on unplugge the the battery if the car turns off its the alternater if it stays on the alternater is good and it could be the battery. but if its a new battery then more likely its the alternater. A more common problem is simply dirty wire connections. Disconnect the battery, the starter, and the alternator. Purchase some electrical parts cleaner and a wire brush (if you don't already have one) from a local parts store. Spray the connections, brush, and spray again to remove loose contaminates. Then reconnect all wires, and give it a try!