Every time I try to search(such as "brake lights stay on") all I get is "the search term you specified is under the 3 word minimum". What I am doing wrong? Thanks for any help.

I think the problem you're having is searching for a word that has less than 3 letters, not words ("on"). Search for "brake lights". The word "on" only has two letters.

The error message reads:
"The search term you specified (on) is under the minimum word length (3)..."

I agree that it is unclear. I have notified the admin about the ambiguity.