So my T4R had a DIY double DIN head unit installed by the owner-before-last and there are still some kinks to work out. The first thing I fixed on my runner truck was the 12V outlet. It was not working at all. Both the ACC fuse and CIG fuse checked good. Lo and behold, I popped the top off the console, and the outlet was just unplugged. I found out the other day however, that the center diff lock was not working. I feared that it was the actuator, which I have read on this forum that replacing the actuator is a $2500 repair. However my 4HI and 4LO work just fine. I popped the lower dash off real quick tonight, and was happy to find that the button was not plugged in. It appears as though when the owner before last installed the double din, they were in a hurry to get it back together, as you'd think the 12V outlet and the center diff lock would be features you would want to retain. I'm just happy it was a $0 fix and not a $2500 fix!:biggrin2: