[Help] Texture missing from Legacy lightbar (Gump's 2018 SAHP charger)

Hello everyone!

I tried reaching out to Gump, the file author, but haven't gotten a reply in almost a week, so I am reaching out here to hopefully get some assistance. I downloaded Gump's 2018 SAHP charger pack to get my hands on a Legacy Charger that is of really good quality. Unfortunately, There is a problem with the textures inside the legacy light bar. The Legacy light bar is texture-less for me when the lights are off. The screenshots attached to the file show there is indeed a light off texture in the bar when the lights are off. Looking in OpenIV, I can see that when all the ELS extras are turned off, there is definitely the light-off texture in the light bar that does not happen in game for me. I do have my graphics settings set all the way to max (I have a beefy computer). I have no issues with any other vehicle in my game. I have not made a single edit to any textures at all.

These first 2 images are what the bar looks like in game. As you can see, the lights work fine.... but when the light is off, the textures are missing

This is looking at the bar in OpenIV. There is definitely textures behind those lights!

Does anyone know why this is happening, or something I can try to fix this? Any help would be much appreciated!