Join Date: Jun 2010
Location: Chilliwack, British Columbia, Canada
Model: 1984 Interstate "Canadian"
Welcome to the forum Brucie.
Your description sounds like a bad ground, possibly a corroded socket and/or bulb.
By the way, unless you love SPAM never post your email address on this or any other forum as Spam bots will find it.
Advise given here is free and comes with no warranty "Caveat emptor"