Welcome back:
I'm not sure what relay you are referring to. The fuse I suggested checking is hot all the time. That sends power directly to the brake light switch. If there is no power at the switch, either the fuse is bad, one of the splices in the wiring is bad, or the wire itself is broken at some point. Were you able to check that fuse? Take a look at the first picture I attached. It shows the fuse I'm questioning. Check that and let me know. If it is good, confirm power is available on both sides of the fuse. Basically, make sure power is going through the fuse and out.
Let me know.
Take care,
Joe
Monday, June 3rd, 2019 AT 7:30 PM