I have a 2001 Ford F250 V10 ESOF Manuel Locking Hubs. So when I lock my hubs and turn the 4x4 switch the 4x4 dosent engage and the light dosent come on. I tested the fuse and the tester didn't light up. So of course I replaced the fuse and it still wouldn't light up the tester. Then I thought I would start with replacing the ESOF switch. I replaced that a couple of days ago and it didn't fix the problem. I'm defiantly at a loss and have no idea what to check next. So any tips would be very useful.

 

Check the shift motor on the t-case. Make sure it has power going to it.