Hey I have no back up lights. I have replaced the neutral safety switch and the problem is still there. I have also tested the socket and I get no power back there. Is there a common place for a wire short for this or could it be something else. I have also checked all fuses and they seem to be fine. Any help would be appreciated. It is a 1993 4.0L if that helps you any, thanks

My 1996 manual says that the ignition switch plays a role in supplying power to the back up lights. It also recommends checking fuse# 8 in the Power Distribution center and fuse# 6 in the junction block. (I'm not certain if the '93 and '96 have the same fuse set up though).