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    Jeep Tachometer / Crank Position Signal Emulator (E‑TX Series)

    Compatible with 1996-2010 Jeeps (TJ, XJ, LJ, JK) for GM Gen III/IV LS Swaps

    What it does: Converts the GM PCM tach output into the Jeep crank position (CKP) pulse train the Jeep PCM expects, so the factory gauge cluster reports RPM correctly on the CAN bus. The E-TXCC variant also translates factory Jeep cruise control button signals to the GM system ('97-'06 TJ/XJ/LJ).

    The Novak Tachometer emulator for Jeep TJ, LJ, and JK with GM engine conversions
    E-TX41;E-TX61;E-TX41;E-TX62;E-TX62
    E-TXCC

    The Tachometer Emulator Module

    Novak has developed this innovative emulator module that receives the tachometer output from a GM Generation III/IV PCM. It then outputs the correct Crank Position (CKP) pulses to the Jeep PCM which then calculates the RPM to be transmitted on the CAN bus to the Jeep gauge module.

    This emulator module is built using an industrial duty processor making thousands of calculations per second to properly mimic the pulsetrain needed by the Jeep PCM to calculate and relay engine speed.




    Additional Cruise Control Functionality

    The Jeep's five Cruise Control buttons talk to the Jeep PCM via complex resistive multiplexing, making integration to the GM system seemingly impossible. Novak's E-TXCC module can take those complex signals and translate them to the GM system for seamless Cruise Control compatibility with your GM engine conversion. Select the E-TXCC Emulator for Tachometer and Cruise Control Emulation on all 1997-2006 XJ, TJ, and LJ Jeeps with a GM Gen III conversion. This E-TXCC module is not compatible with Jeep JK models.

    Applications & Compatibility

    Versions

    The #E-TX series are all compatible with most Gen III & IV GM engine swaps.

    Holly ECM's are not supported. This emulator is specifically designed for use with stock GM PCM's.

    The E-TXCC is compatible with all 1997-2006 XJ, TJ, and LJ's, and only Gen III (1999-2007) GM engine swaps. When using a 1999-2001 GM engine, the stock cruise control module must be retained.

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    Installation Requirements

    Installation

    Installation requires that the installer be able to competently join the wire leads to the existing Jeep wiring harness as directed in the instructions. This is best done with solder and thermal shrink wrap, followed up by wire loom. Physical installation into the Jeep engine bay is easy using the mounting tabs on the case of the module. Drilling is required.

    E-TX Instructions (PDF)
    E-TXCC Instructions (PDF)

    Pull-up Resistor

    A pull-up resistor is often required for tachometer applications. However, the Novak tach emulator circuitry already includes this.

    Video Instructions

    Video thumbnail

    Also See