Last week all my idiot lights came on while driving my 300ZX. They go out when I am at a full stop.
I had the charging system checked at a Shuck's(Part's America) store. The instrument they used measured a 12.42 charge, but it stated that the "diode ripple" was not detected.
I am still able to start my car. Do I need an alternator, or is there another electrical problem?