97 Mercury Grand Marquis brake and hazard lights on rear not work?

I have asked this question before and received several answers, which none worked. So I googled my question and received several great answers, one of which actually worked.

Take WD-40 and spray several times into the flasher button on the column, then push up and down several times to release the crud and dirt in the switch. This solution worked and now my lights all work.

Saved hundreds of dollars getting a service tech to look at it and try charge me for it, when this trick did it for the price of can WD-40.