It's just yours, your lightbar lighting is dim during the day, but the fog lights and other exterior lights are good. I use a custom lighting enhancer trust it isn't my graphics.
I use VisualV, however I use a custom visual config and it is perfect on every pack including yours (at night) however during the day when using your pack, the lights are fairly dim and do not have much color behind them.
Very clean and good quality pack, I understand it is still WIP. However, with further tweaks I recommend turning up the ELS emissive on the entire pack, specifically daylight emissive.