The FrSky module is very easy to install in the later Kraft transmitters if you just want to clip and splice wires (yellow goes to yellow, black to black, red to red). I went the extra step and eliminated all the old RF-Module wiring and installed a locking Molex-connector so the FrSky module can be removed if needed. The red and black wires are soldered directly to the power switch where the old wires went. The yellow signal wire can be pulled through the wiring bundle and all three can be joined to a connector.
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