Hi. First post in what looks to be very helpful forum. Just bought 312G, which seems very good. However, there is one possible 'issue' which I would request some advice on. Unit is hardwired to ignition without parking mode. When powered up records fine, but blue charging light comes on for a few seconds then goes out even though battery is partially discharged, (2 bars). Manually re-starting camera, or car, gets blue charging light to stay on till unit fully charged. Is unit faulty? Any advice much appreciated.