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If you don't have a multimeter ask a friend/neighbor if you can borrow theirs. Set it for DC 15 volts and touch the probes to the wiring or inside the socket being careful not to let the probes touch. If polarity is correct the meter will swing up or digital display will show +. If it's incorrect the meter will swing down or a display will show -.
Another option is to pick up an inexpensive polarity tester. They're available at most auto supply and hardware stores.
Cheers
What else can I help you with?
How do you fix a cigarette lighter on a Chevy Cavalier?
To fix the cigarette lighter on a Chevy Cavalier, check the fuse first. Next check the wiring and the cigarette lighter itself for a problem.
How do you fix a cigarette lighter in a 1991 eagle talon?
check your fuse for the cig lighter
What is cause Ford expedition cigarette lighter inoperative?
If a Ford Expedition loses operation of a cigarette lighter, there is a loss of power. Check the fuses and wiring to the lighter to find the problem.
Why does your cigertte lighter on your 99 grand prix keep blowing when you plug in your cell phone charger?
Either there is a fault in the cell phone charger (try it in something else) or the wires on the cigarette lighter socket are reverse polarity. Check centre of socket is positive.
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Check fuse, or replace the lighter.
Why is my Cigarette lighter okay but no power coming to it and fuse is okay?
When your cigarette lighter fuse is good and there is voltage measured between the fuse's load side to ground (To check this, use a dc voltmeter or a 12v automotive lamp and an automotive lamp socket. Connect one wire to the fuse and the other wire to the chassis of the vehicle the lamp should glow if voltage is present on the fuse terminal.), check the wire between the fuse and cigarette lighter. This wire should be without cut and when the wire is good then check the connector on the cigarette lighter socket for loose connection or corrosion. One more thing is that, make sure that your cigarette lighter fits the cigarette lighter socket because not all cigarette lighters will work on some cigarette lighter sockets.
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Check the fuses
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Did you check for a blown fuse?
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If a Chevy Cavalier cigarette lighter doesn't work, check the fuse. The fuse may be blown and will need replaced.
1996 mustangs cigarette lighter doesn't work?
Check the fuses first.
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check your fuses.
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Check the fuse.
