Installation and Troubleshooting Guide
This installation is to be completed by an Authorized Dealer or Professional Service
Technician. For questions regarding installation or warranty, call CDI Tech Support
at 866-423-4832. Do not return to the Dealer or Distributor where the part was purchased.
Contact CDI Electronics Directly for Return Material Authorization.
CDI Electronics, LLC
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353 James Record Road SW
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Huntsville, AL 35824 USA
Web Support: www.
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Tech Support: 1-866-423-4832
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Order Parts: 1-800-467-3371
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Rev E
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4/30/2021 Page - 4 of 4 QF-358
7. Measure the DVA across the Stator’s Yellow battery charge wires, while connected to the Regulator/Rectifier. At idle the DVA will
normally between 8-25 DVA. If not, disconnect the Yellow wires from the Regulator/Rectifier and retest. DVA will normally be 17-50
DVA at idle. If the voltage is low, the Stator is possibly faulty. Perform a visual of the Stator for browning and varnish dripping. These
are signs that the Stator has overheated. If the visual inspection shows any of these signs, replace the Stator.
TACHOMETER TESTS
1. Measure the DVA across the Stator’s Yellow battery charge wires, while connected to the Regulator/Rectifier. At idle the DVA will
normally be between 8-25 DVA. If not, disconnect the Yellow wires from the Regulator/Rectifier and retest. DVA will normally be 17-50
DVA at idle. If the voltage is now within specification, the Regulator/Rectifier is likely defective.
2. Disconnect the Regulator’s Gray wire. At 800-1,000 RPM, check the DVA on the Grey wire FROM THE REGULATOR/RECTIFIER
measured to engine ground. The reading should be 8 DVA or more. If not, replace the Regulator/Rectifier.
3. If at least 8 DVA, run a jumper wire from the Gray wire out of the harness to one of the Stator’s Yellow wires.
4. If still no tachometer signal, try a known good tachometer.
5. If still no tachometer signal, replace the Stator.