Hyundai Repair: Hyundai dash lights, computer scope, mercury cougar

Question
My brake light and battery lights came on tonight while driving home and the speedometer stopped working.  Also the right passenger side headlight was also out, although it was replaced about 3 months ago.  The battery is the second battery in the car and the car is 7 years old.  Please advise.  Thank you.

Answer
Hi Bill,
I have a 1997 Tiburon... my son has a 2000 Tiburon. I have the dash lights blinking problem but speedometer still works, dome light out and son has the tailights and speedometer out.  My right headlight blows a bulb every couple months and fog lights blow out within five minutes of replacing bulbs and/or fuse. Installed second battery only a few months ago.  Alternator went out and changed it about a year ago, and have replaced all working brake parts in my car. Still have my electical problems.

I am not a mechanic, i signed up on this website as an auto paint expert and do not know why i get mechanical questions.  

I asked a Hyundai dealership service advisor these electrical question? and also asked if this was a common Tiburon problem?  He said "never heard of it on a Tiburon" and Hyundai dosn't keep track of common problems like "Consumer Digest" magazine. And for $90.00 would test it out on his computer scope.  I don't think this is a problem that shows up on a computer scope in my opinion - but could be wrong.  Bill, i think we need to shell out some bucks but first figure out if your mechanic is familiar with what you are talking about.  I wouldn't give the service advisor i talked to my business simply because he either was stupid or pretended to be stupid.  If you find a chat area where someone knows something about our problem please tell me about it also. (PS i had a girlfriend who took her Mercury Cougar to an auto electic repair facility for her intermitant lights problems and they charged her $900.00)   
Thanks, Joe