Polarity change plus cigar lighter
Posted: Thu Mar 29, 2018 2:25 pm
I changed the polarity many years ago when i fitted an alternator. I'm just fitting a new dash and it struck me that in years gone by it didn't matter about the polarity of the connections on the cigar lighter as all it did was heat up an element.
Nowadays we plug all sorts of electronic gizmo's into the cigar lighter and use it as just a power outlet.
So,what way round should the polarity be so I don't blow up my sat nav, mobile phone and whatever else i plug in.
I'm guessing the body should be negative and centre pin positive, but can anyone confirm this and have everyone else swapped their cigar lighter connections when changing polarity?
I know I changed the radio connections, the electronic ignition and the tachometer but its so long ago I can't remember if I changed anything else.
Nowadays we plug all sorts of electronic gizmo's into the cigar lighter and use it as just a power outlet.
So,what way round should the polarity be so I don't blow up my sat nav, mobile phone and whatever else i plug in.
I'm guessing the body should be negative and centre pin positive, but can anyone confirm this and have everyone else swapped their cigar lighter connections when changing polarity?
I know I changed the radio connections, the electronic ignition and the tachometer but its so long ago I can't remember if I changed anything else.