So I just got a 2007 ram 1500 big horn edition. The reverse lights don't work. After doing some research I read that it could be a back up sensor/switch mounted on the side of the trans. I can't seem to find the part to purchase anywhere though.

My question is, is this a real thing on my year and model? Are there any other things I should look at, or any other ideas of what could be wrong?

 

Look on weeds links for the service manuals.