Dakota Digital 128K 3-Wire GM-Thread Pulse Generator

Complete your GM transmission swap the right way with this pulse generator (SEN-01-128). Its for Chevy applications using older transmissions with a mechanical speedometer output. This unit recreates the high-frequency signal modern GM ECMs require. It generates a 128K PPM sine-wave signal, allowing the ECM to properly read vehicle speed, manage fuel strategies, and maintain drivability. A removable weather-tight 10’ harness simplifies routing and makes the generator hassle-free to integrate during your swap.

Features and Benefits:
- Fits GM transmissions with 7/8" male speedometer threading
- Recreates high-frequency signal needed by late-model ECMs
- Outputs accurate 128,000 pulse-per-mile sine wave signal
- Direct replacement for GM internal speed sensor
- Compatible with TH350, TH400, 700R4, 200-4R and similar units
- Includes weather-tight removable 10' cable
- Ideal for mechanical-drive to ECM conversions

Vehicle Fitment:
- 1960-1987 Chevy C10s
- 1988-1988 Chevy/GMC C/K Trucks