These functions get power from red wire #21, coming from the power distribution board beside the cab. I'm assuming this is the board you replaced. Check for full 12 volts coming out of the board on this wire, follow it under the cab to the right side and in the cab wall connector. Trace it right to the problem functions. Also check the grounds bolted to the frame rail behind the engine on the engine compartment floor. Ground wire # 20 is the one to check here.