Pawel ,Hi ,i realize this was posted a while back, but thought i would,
let members know, about this small dash monitor that pushes into your
cigarette lighter socket,.
Its made by Innova 3721, for memory about $15,can be purchased from
many places,and although we as pagoda owners dont really need it, it works fantastic,
gives you the actual reading ,idling and cruising.Or kept in glove box, very handy.
Ask hundreds of Porsche 911 owners that do not have voltage dials--lights up until 1987.
Critical for Porsche as when there alternator goes bad, it can start charging up to 16-17 volts
and blow the battery,which can cause a fire.
Photo from my 84 Porsche 911 , sold couple of years ago.