The CCC system does not require special tools for diagnosis. A dwell meter, tachometer, test light, ohmmeter, digital voltmeter with 10 megohms impedance (minimum), vacuum pump, vacuum gauge and 6 jumper wires 6" long (1 wire with female connectors at both ends; 1 wire with male connectors at both ends; 4 wires with male and female connectors at opposite ends) are only tools necessary for diagnosis.
NOTE:
If dwell meter causes a change in engine operation when connected to M/C solenoid "DWELL" lead (green connector near carburetor), it CANNOT be used. The following tach/dwell models should not be used: G, GA, TDT 1, 2 or 5, 216 and 216/1.