Ok long story, i was working on my tool box lights and popped the fuse. Checked my trucks panel ('06 1500 4x4 qc) and saw #30 was a spare, so i used it. Today my wife called me and said the speedometer wasnt working and the abs and brake light was on. She took it to az and they scanned it saying i needed $427 worth of sensors for both abs and speed sensor. I told her to leave there and bring my truck to me at work. I drove it home and was thinking about the "spare" fuse. Pulled in the driveway, turned off the truck, put the fuse back and wala, everything back to normal. So has anyone else noticed that the #30 spare fuse is not a spare?