Some years ago I purchased a used MFJ-1263 microphone / rig switch with a view to using it as an ongoing test bed for my Roger Beep module.
The Roger Beep module was assembled with 6 way 90° single row header pins for easy connection and disconnection.
The module was built, tested and adjusted for audio output level and encapsulated in clear heat shrink. The cable was made from parts from ready made 3 way RC servo jumpers with the wires removed and inserted into more suited back shells.
Above are the connections to the MFJ-1263 to suit an Icom IC-7410. In this case, PTT is on pin 5 of the IC-7410 mic socket, ao AR5 was used to connect the RB module because it contains the PTT cross connect jumper (which you remove). RB PTT_IN and PTT_OUT connect to the lower and upper ‘5’ pins of AR5, and Audio_out, +DC, and GND on pins 1,2,6 upper pins. The use of 2 way connector for PTT_IN and PTT_OUT, and 1 way connectors for the others makes for flexibility to re-patch it to suit other radios.
It is VERY important to get these connections correct, pay attention to the sense of PTT_IN and PTT_OUT.
Adjust the module as described in the documentation and job is done.
I have a footswitch plugged into the PTT jack in the rear of the MFJ-1263, and have configured the Roger Beep Tap’nYap for 10min timeout so a tap of the footswitch locks the PTT on for a ‘yap’ and it can be released with another tap… or will timeout on a very long over.
Fitting to the MFJ1260 and MFJ-1261 would be quite similar.