Jr.- Welcome to iRV2!!
You can post a photo of your taillight by following directions in Post #7 here
. That way somebody can match it.
You might also try this query in the National Owner's Forum
for more targeted results.
Also, you can check out the UserCP function at upper left, and add a custom signature to your posts automatically, so you don't need to post your rig's year, model, etc. to get folks acquainted w/what you are driving & might be discussing.
Happy posting, and again- WELCOME!!!