Introduction
This manual provides detailed instructions for the installation and use of the ICT Billet LS Gen IV Crankshaft Position Sensor to Gen III Harness Adapter. This adapter facilitates the connection of a Gen IV crankshaft position sensor to a Gen III wiring harness, ensuring proper signal transmission and engine operation.
Product Overview
The ICT Billet WACKP30-6 adapter harness is designed to bridge the compatibility gap between Gen III wiring harnesses and Gen IV crankshaft position sensors. It is a 6-inch adapter, manufactured with OEM-grade components for reliable performance and durability.

Image: The ICT Billet LS Gen IV Crankshaft Position Sensor to Gen III Harness Adapter, showing the two different connector types and the braided wire sleeve.
Compatibility
- Compatible with all Gen III wiring harnesses.
- Compatible with all Gen IV crankshaft position sensors.
Setup and Installation
This adapter is designed for a direct plug-and-play installation. Follow these steps for proper setup:
- Ensure the vehicle's battery is disconnected before beginning installation to prevent electrical hazards.
- Locate the existing crankshaft position sensor on your engine.
- Disconnect the Gen III wiring harness from the Gen III crankshaft position sensor (if applicable, or prepare for new Gen IV sensor).
- Connect the appropriate end of the ICT Billet adapter harness to your Gen III wiring harness. Ensure a secure and tight connection.
- Connect the other end of the adapter harness to the Gen IV crankshaft position sensor. Verify it clicks into place.
- Secure all connections and route the harness away from hot engine components or moving parts to prevent damage.
- Reconnect the vehicle's battery.
- Verify proper engine operation after installation.

Image: Close-up view of the adapter harness, highlighting the distinct Gen III and Gen IV connector types for correct installation.

Image: Detailed view of the Gen III and Gen IV connectors on the adapter, illustrating their unique pin configurations for accurate connection.
Operation
Once correctly installed, the adapter functions automatically, allowing the Gen IV crankshaft position sensor to communicate effectively with the Gen III engine control unit (ECU) via the existing harness. No user intervention is required for its operation.
Maintenance
This adapter harness requires minimal maintenance. Adhering to the following guidelines will help ensure its longevity:
- Periodically inspect the connections for tightness and signs of wear or corrosion.
- Ensure the harness is routed away from hot engine components or moving parts to prevent damage.
- Clean any dirt or debris from the connectors using a suitable electrical contact cleaner if necessary.
Troubleshooting
- Engine Cranking but No Start:
- Verify all connections are secure and fully seated.
- Check the crankshaft position sensor itself for proper function.
- Ensure the adapter is correctly installed between the Gen III harness and Gen IV sensor.
- Check Engine Light (CEL) Related to Crank Sensor:
- Confirm the correct Gen IV sensor is being used.
- Inspect the adapter harness for any visible damage or pinched wires.
- Consult a diagnostic tool to retrieve specific trouble codes for further analysis.
- Intermittent Engine Stalling:
- Check for loose connections at both ends of the adapter and the sensor.
- Ensure the harness is not exposed to excessive vibration or heat.
If issues persist after basic troubleshooting, professional automotive diagnosis is recommended.
Specifications
- Model Number: WACKP30-6
- Length: 6 inches
- Wire Type: USA made OEM grade TXL wire
- Connectors: OEM Delphi connectors and terminals
- Maximum Supply Voltage: 12 Volts
- Item Weight: 20.87 g (0.74 ounces)
- Package Dimensions: 5.67 x 3.82 x 0.98 inches
Package Contents
- 1x ICT Billet LS Gen IV Crankshaft Position Sensor to Gen III Harness Adapter (6-inch)
Warranty and Support
For warranty information or technical support regarding your ICT Billet product, please refer to the official ICT Billet website or contact their customer service directly. ICT Billet is a proud SEMA member, committed to serving the motor vehicle aftermarket with quality products and support.

Image: The SEMA (Specialty Equipment Market Association) Member logo, indicating industry affiliation and commitment to the automotive aftermarket.





