Digital Solutions for Cadillac Engine Swaps

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"The E/K Display"

Finally, a stock-looking, integrated instrumentation solution for 1982-85 Eldorado and Seville owners who have swapped out their HT4100 and now have a defunct Fuel Data panel. Works with Diesels, too!


  • Oil Pressure 0-90 PSI
  • Engine Temperature 0-275F / Switchable to Celsius
  • Battery Voltage w/over-voltage alert
  • 'Loss of Oil Pressure' Warning
  • Two Over-Temperature Alarms
  • Torque Converter Lockup Feature
  • 3-Level Brightness Control or variable with Dash Dimmer
  • Compatible with all 1982-85 Seville and Eldo "MPG Sentinel" & "Fuel Data" Displays

The processor board, no bigger than a deck of cards, connects directly to your existing Fuel Data display and installs easily under the dash with its included case. Coolant Temperature, Oil Pressure and System Voltage are displayed at the touch of a button, and a new laser-etched overlay with factory-style text is included. Should you want to be warned of loss of oil pressure, or an engine over-temp situation, a single connection to the factory warning chime is all that’s required.

For minimal wiring, 3-levels of display brightness are built-in, or connect to your headlight switch/rheostat and the digits will dim variably with your other displays. Brightness has been calibrated to track the factory brightness curve.

A genuine problem after an engine swap is how to lock up the transmission torque converter.... The processor board also handles that! It prevents TCC engagement until the engine is warm, provides a delay after input conditions are met to prevent short cycling, and keeps the existing TCC brake switch for quick disengagement. Plus it works with the normally-closed 4th Gear Switch these cars use. Just add an aftermarket vacuum switch and you're set!

Each unit is hand assembled, programmed, tested, and includes a 12-month warranty.

December 2022 Update:

Hardware and Software has been finalized and multiple units have been built and are undergoing testing to prove out durability and fine-tuning. Pricing and availability is on hold until I work through all laser and engraving options for the display insert. Stay Tuned for Updates!