1997 Ford F150 4x4 4.6L......

Is the headlight system positive or negative ground?

What's the difference?

Thanks

 

Usually Positive ground was used in English cars/trucks not American cars/ trucks.

 

My 53 plymouth was 6V positive ground.

 

I think you'll find that all modern cars are negative ground; that is, the negative side of the battery is connected to the body. However, in automotive wiring the controls or switches can be in either the positive or the negative part of the circuit. So a given circuit may be identified as either positive or negative polarity.