1997 SL1

spark plugs and wires just replaced by dealer about a month ago.

My daughter was driving to work and said the stereo went off, then the speed
odometer quit working. Having a hard time getting up to speed - said she had
it floored and it hesitated but finally started working - speed odometer
still not working. Now the car just clicks when you try and start it - like
a dead battery. When it makes the clicking noise as your trying to start,
the dome lights etc... go off and on as it clicks.

I have not had a chance to try and jump start it yet. I really don't think
jump starting it (if it would even start) would solve it since it started
doing this while it was running. Would an alternator cause this while it was
running?  Definitely some kind of electrical issue going on.

Thought. Advice?

thanks in advance.