I don't know if anyone is having this issue? But Some of the socalwb909 & JR Locos I have installed have problems with their numbers & interiors. Is there any situation for this problem?
Unfortunately you have to use image hosting site to display your images here in this forum, because directly linking images from your local drive would have no effects on displaying your images right here (images would only show if you uploaded it into image hosting site). You could use free image hosting sites like Postimages, ImgBB etc for uploading images like screenshots etc into the web.
If you don't know how to use it, here is an example of tutorial of how to use Postimages:
Easiest just to upload to Trainz Gallery and then copy the link and use the "Insert Image" icon to paste the link in your post. Then the image will appear.