Best Answer: A couple of thoughts: - 1) The cigarette lighter doesn't usually work unless the ignition is switched on 2) The plugs on some of the really cheap leads do not make good contact with the car's cigarette lighter socket.Test with a multi-meter. Source(s): Had the same problem with a cheap re-chargeable torch.elevance. Rating Newest Oldest. Best Answer: A couple of thoughts: - 1) The cigarette lighter doesn't usually work unless the ignition is switched on 2) The plugs on some of the really cheap leads do not make good contact with the car's cigarette lighter socket. Test with a multi-meter.