shotty nissan wiring

[nocturnaldrifter]

I was told by a mechanic that nissans have pretty bad wiring in general (at least the old ones). My cluster lights recently went out, however they go on when I brake? everything gets brighter when i brake (like my headunit, dash, ect.) recently my rear running lights went out, they only come on when i brake. Basically all my lighting is shitty and it's getting annoying, i've searched the threads but havnt found just a general electrical wiring problem solution. What should I target first ? new ground wiring, battery? fuses? wiring itself? I need some help on what to target first, any info is greatly appreciated.