Thank you guys so much for your suggestions and support.Larry,you should have been a teacher! The trouble was with the optimeter.Deesel's comments on safety were well taken also.
I have another question: The 300D headlamp switch has settings at 1 o'clock for the park lights and 2 o'clock for the headlights.The 11 o'clock setting turns on the right side only park lights while the 10 o'clock setting turns on the left side only park lights. In the meantime,the inside set of headlights or driving lamps or whatever they are don't turn on at all(...remember I don't have an owners manuel as yet). I'm assuming the two are connected? Could someone advise what might be going on here ? Thanks again .