Hi-mount brake light on 2001 NISSAN Frontier

I have a 2001 NISSAN Frontier that the hi-mount third brake light appears the be going out. I’ve trie to remove the plastic light bezel but a clip is holding in the connector. I’m afraid to use too much force while pushing in the clip with a flat head screwdriver but that is the only thing I know to use. The lights are dim and seem to flicker as the brake pedal is pressed. What are your thought an advice in how to replace the hi-mount brake light?

I’m not sure if this is what you’re after or not: