Jeep tail light question

My wifes 99 Grand drivers side tail light and reverse light don't work. Turn signal does. I just replaced them and re-checked them yesterday. The high-mount light is burned out. Would that cause the, brake and rear marker light not to function?

I dont know but I believe this is a pretty common issue with grands from those years

any idea what the "fix" is?

Grounds?

I checked all the contacts and even cleaned them all up.