230A; 230B; 250A; 250B Miscellaneous Equipment Tachometer Kit Parts on group Tachometer Kit: Pos. Part No Qty Parts name Comments 1. 856833 [1] Tachometer kit 2. 856809 [1] Synchronizer 3. 863945 [1] Bulb socket 4. 863946 [1] Bulb 5. 856805 [1] Ring 6. See group 3 Parts catalog : Clock Kit Instrument Kit Instrument Panel Mechanical Lift Device Extra Instrument Panel Charging Relay Kit Separate Mounted Charging Relay Separate Mounted: 859499 Electronic Speed and Distance Log Kit High Speed Pitot Tube Log Kit Control Unit for Digital Alternative Analog Instrument Propeller Drive Unit: A Propeller Drive Unit: B Trim Tabs