[KenWittlief]

you might need to check the way the signals are wired on the receiver - there is power, gnd and command on the three wires - some RC systems have power and command switched (power in the middle or command in the middle)

you might need to switch the wires around in the connectors.

BTW - you might get more responses to this thread if you spelled out the question more in the subject line. Not everyone reads every single thread on the forum :^)