I have a 2004 grand cherokee and the back up lights are not working. I have checked the bulbs and they are fine and I couldn't find a fuse for the backup lights.

I have read about NSS's giving these types of problems, but never in relation to a 2004. Could this still be the problem? If so are there any good guides that show how to take care of it? I found one on a site called jeepin.com, but it looks to be a dead site. None of the pictures would load.

Thanks for your help!