How to fix brake lights that do not work

Brakelights and taillights do not work. Took it to shop and they said it was lamp failure module. Which I replace about a year ago. Lights worked for about a year. Same issue is back again. I replaced all bulbs with correct resistance and that did not fix the issue. So I purchased another lamp failure module. And checked all fuses relate to the brakelights still no brakelights would like to fix the problem my self. Any suggestions would be helpful.