I use the Standard Ignition KS6 for an automatic transmission when doing the '427 PCM conversion. The parts stores are not able to look up the correct knock sensor after the '427 PCM conversion. The old ESC module needs to be completely removed from the old knock sensor circuit.

There are four wires that go to the old ESC module:
1. 12 volt with ignition switch in the on position. (Usually Pink wire with a Black Stripe)
2. Ground. (Usually a Black wire with a White Stripe)
3. Knock Sensor wire ~ from knock sensor to ESC Module. (color varies by model year)
4. Knock Sensor wire ~ from ECM to ESC Module. (color varies by year)

Solder together wires 3 and 4, and check with an ohm meter to make sure you have continuity from the ECM to the Knock Sensor.

dave w