Advice needed please! Last winter my CDL was stuck in locked and had a horrible clicking/clanking noise when I would turn the wheels while moving. Checked the relay, fuses and switch which were all fine so I decided to remove the front drive shaft and drove it as is all summer. Everything ran fine, no noise or anything. With winter coming I dove back into the problem and found that the actuator would not run (9 volt battery test). So I got a used actuator, plugged it in and shifted into 4 lo and then installed it. The CDL is now disengaged, but will not engage when I shift into 4 lo. I can hear the actuator run, but no lights come on the dash and the front wheels do not bind up in a turn like they normally would when locked. Does anyone have any suggestions please? I've even unbolted the actuator and turned the drive gear that fits down into the transfer case by hand and the diff lock light still doesn't come on.