[Focus2112]

G'Day

I have a 2006 ford focus hatch 2.0L (auto). It has approximately 210 000 KM's so its no spring chicken. It has an odd problem of having the drivers side brake light always being dimmer then then passengers side. You can tell its still working only at night only thats how dim it is. I changed the bulbs, ran a diagnostic but no luck. Can some one suggest any ways to rectify? I was thinking..1) perhaps a ground issue so cut the ground and re-ground it some where else? 2) daisy chain or link it to the working brake light that isnt dim (but unsure if that will dim that out too?) Or 3 change the socket for the brake light globe?

Any ideas?
Cheers