Okay folks how do you add reskinned vehicles to show up on the roads?

I recently reskinned the stock white pickup to several different colors for more variety. I renamed the bin and geopcdx files from CajonPass_WP_18_05 to CajonPass_BLK_WP_18_05 and also tried the naming convention as CajonPass_WP_18_05_BLK to see if that was the problem (with BLK designating the color). I did this for both "traffic" and "parked" models. Now these models, both the parked and "traffic" models show up in the game as normal both day and night with lights but as scenery static models only.
Also I added to the US_Vehicle files the new files from US_Vehicle06 to US_Vehicle13 so the road system should recognize them. Now adding these new files to the US_Vehicle files should be okay as Scale Roads has European Cars numbered way up into the teens for numbering. Also this problem occurs in Scale roads as well.
So the big question is how do I get the game to recognize them?
Also I added to the US_Vehicle files the new files from US_Vehicle06 to US_Vehicle13 so the road system should recognize them. Now adding these new files to the US_Vehicle files should be okay as Scale Roads has European Cars numbered way up into the teens for numbering. Also this problem occurs in Scale roads as well.
So the big question is how do I get the game to recognize them?
