How do you check the polarity in a car?

Answer by  ijlalnoor (2656)

Follow the wires from you battery and check which one of them joins to the engine. This determines the polarity of your car.

Answer by  lmmare (22)

Follow the battery leads from the battery to their termination on the car. The one that attaches to the chassis or engine block determains the polarity.

Answer by  LeonMMA (496)

as i said to you , it is more simple to go to a service and they will tell you all that you have to know , including the polarity

Answer by  rookie105 (823)

most american cars the positive battery cable goes to the starter whether the cable is red or not, that will be your hot cable and the car body is the ground

Answer by  Pitz (29)

You first have to find out when your battery was purchased and installed. once this is known you can look at the receipt to check it.

Answer by  a31nelson (80)

A car is negative polarity when it comes to the frame and body. It has a positive polarity when you check all the electrical system points.