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Phone orders 9am to 3:30 pm Eastern Standard Time. 440-668-8164

Definition of Models:

Bluetooth Programmable = Program with Phone or device.

Android 123\TUNE+ or Apple 123\TUNE

PC Programmable = Program with a PC, Download software and cable required 

Switched = Preset curves you select via a switch.


We love to help, please use our contact tab above. See the help button for installation issues.

These distributors have state of the art electronics. You should have a good understanding of the basic principles for installing distributors. ALWAYS! confirm your timing at the crankshaft against a point in the app with a timing light. This will sync the app and the motor.

If you do not feel qualified please reach out to your mechanic.

123 Wiring Diagrams

Negative Ground Switched


Negative Ground TUNE USB


Negative Ground Bluetooth TUNE+


Positive Ground (Applies to Switch TUNE and TUNE+ Models.) In case of the TUNE, Yellow wire goes via electric switch to Earth ( +12 Volt)


D-Jetronic Negative Ground Switched



HKZ 3-Pin Wiring Diagram Compliments of



Porsche 911 3.0 SC w/6 pin HKZ



User accepts all responsibility for wiring after market components to the 123ignition