No 4x4 05 brute force

Hi guys I had a issue with my wiring, the fan wasn't engaging traced it back to the bus bar and did the old soider trick. Now I have no 4 wheel drive. the belt indicator was on but has now been reset, we have checked the the actutor, speed sensor. We did notice a low voltage coming from the brain box. We are stumped any help would be great. We are stumped?????????????

I am having the same problem with my 4 wheel drive. I am only getting like 4.5 volts on the 4x4 plug.

make that 3 of us having the same issue!!!

Mine is doing the same thing as well. I have checked the acutator and it is good, how do I check voltage at the switch?