1995 3000GT VR-4: Making OEM Keyless Entry Work With a Turbo Timer

These instructions apply to a 1995 Mitsubishi 3000GT VR-4, but are easily transferable to any model/year of 3000GT or Dodge Stealth.

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The Procedure

Examine Turbo Timer Harness
  • Shown is the HKS MT-1 Turbo Timer Harness. It has 3 connectors on it: one male/female pair of connectors for the OEM ignition switch harness and one 3-pin connector for the Turbo Timer. The harness is essentially a pass-through connector for the ignition switch wiring, with taps (tees) into the battery(B+), ignition (IG1) and accessory (ACC) circuit wires.
  • Your wiring harness may have different colors than mine, but on my harness, the ACC wire was the blue one.
  • See below for schematics and an explanation of how this modification works.
Schematic of the Stock Ignition Switch Circuit
  Here you can see how the stock circuit works. The blue box represents the ignition switch in your steering column - that's the thing you stick your key in to start the car. It has 4 positions: Off, Acc, On, and Start. Each of these positions causes a different set of the 6 wires in the harness to be connected. The black dots indicate a connection when the switch is in that position, and the intersections without the black dots indicate that there is no connection.


Schematic of the Ignition Switch Circuit With Turbo Timer Added
  Here you can see how the circuit works once the Turbo Timer harness has been installed. Note that the shaded region represents the non-OEM parts added to the car. As indicated, you need to cut the blue wire to disable the accessory circuit while the Turbo Timer is running the car. I have seen no negative effects of this modification in my car, and my keyless entry works perfectly.


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Last Modified Mon Oct 20 2003 17:32:49 PDT