I installed a Ray Allen stick grip which has 5 buttons in the head of the grip. Two buttons are assigned to the elevator trim control (up and down trim), one is for Auto Pilot Dis-engage command to the A/P servos, one is for a relay which will be used to initiate a command selected in the on board programmable controller (such as start or stop camera recording, start smoke system etc) and the last is the Push to Talk button for radio communications. I brought these wire out to a terminal block which is located below the pilots seat. I used the WAGO spring clamping series terminal blocks everywhere I need to provide a junction point. These terminal blocks are designed for high vibration service and do not loosen up like screws do over time. Additional terminals are provided for the flap actuator connections.