I have two problems, and I was wondering if it will cost more than it's
worth to fix, or could I fix it myself, I'm not good at any electrical
work.  And is this a common thing to fail.
 My temp. gauge needle jumps around,  If it goes all the way up I can
bang on the dash and it comes back to normal, or hitting bumps in the
road will make it move around.  It never stays in one place for too
long.  My car is not overheating at all.  Could something be shorting
out?
 Second, my parking break light is now doing the same thing coming on
and going off.  Everything else is ok.  My car is an automatic, I don't
use the parking break, but I tried it to see if it works and it does
release the break ok.  So does this sound like some kind of short, or
what do you think?
 Thank You in advance for any help.
Ed