96 riviera brake lights dont work

I know the bulbs are good ive checked all the fuses except the ones under the back seat which im getting ready to check but if ne 1 has any other ideas please let me know. even the brake light in the window dont work someone said it could be the turn signal switch. i do have problems with it turning the cruise control off when i use my blinker. thanks

i checked fuses under seat and thats not it.

Have your brake light switch tested. Located under dash, driver side.

Also could be the combination (directional/wipers/cruisecontrol) switch. It was on mine to the tune of $500

That turns out to be what it was but i own a 96 and bought one off ebay for a 98 and a few wires are different and it didnt work. I put it on and the brake lights worked, but it wouldnt start and im not sure what else woudnt work.