As if the paddle shifters weren't cool enough, the optional display allows the driver to view an array of data including:

•Current gear
•Vehicle speed
•Coolant temperature
•Converter lockup
•Engine rpm
•Turbine rpm
•Transmission slip
•Manifold pressure
•Transmission temperature
•Line pressure
•Driveshaft rpm

Installation of the Simple Shift is Uncomplicated

Mount the unit, hook up the wires, and you're ready to go. The output from the TCU plugs into the factory socket on the transmission; the remaining wires are for signals to the TCU—some are not used while others are.

Output Shaft Speed Sensor (also called the VSS or Vehicle Speed Sensor)

For transmissions with an Output Shaft Speed Sensor PCS has added a ‘Y' to the wiring harness, which allows the Simple-Shift harness to plug directly into the transmission and still leave an access plug for aftermarket speedometers or factory connectors that require a VSS signal.

Input Shaft Speed Sensor

If the transmission is equipped with it, this connector is required for operation.

Throttle Position Sensor

For cable-driven type throttle bodies it's simply a matter of splicing into the existing throttle position sensor wiring. Proper wiring techniques can be found on the support page at For carbureted applications, a Remote Mount TPS Adapter Kit is included in the Simple Shift Carb kit or available from PCS, part number TCM-6000.

Brake Lamp Input

This is required to unlock the torque converter when the brakes are applied.


This wire is not required for operation of the Simple Shift unit. Its purpose is to deliver a signal to early, older versions of electronic speedometers. Most aftermarket speedometers will use the Output Shaft Speed Signal.


Not required for operation of the Simple Shift unit, but it is recommended to offer comprehensive diagnostic capabilities. To utilize the full diagnostic function of your Simple Shift, connect this wire to the tachometer output wire of your ignition system. The tachometer ground wire must also be connected.

PCS Expansion

Not required for operation of the Simple Shift unit, it allows optional equipment, such as the Paddle Shifter or the D200 Touchscreen Dash logger, to be connected to the Simple Shift system. Instructions on how to utilize this connector will be included in the instructions for the optional expansion kits.

+12V Battery

Required for operation of the Simple Shift unit, it must be connected to the positive terminal of the vehicle's battery. Improper wiring will cause the unit to lose its TPS calibration and will not store diagnostic codes.

Switched +12V

Required for operation it is connected to the ignition/start system of your vehicle. It must have +12 volts while in both the start and run positions and no power while in the off position.

Chassis Ground

This wire is required; it is connected to the vehicle's chassis. During the initial installation and before driving the vehicle, the Simple Shift knobs must be set to a baseline configuration described in the instructions, then further adjustments can be made.

Full-Throttle Shift Points

PCS recommends this must be done under a controlled environment such as a dragstrip or a chassis dyno so no speed limits are exceeded. Shifts are going to occur at approximately the same rpm for each shift; therefore you may only need to make adjustments using the 1st to 2nd shift as a test. To lower the shift point, turn the knob counterclockwise toward the negative numbers. To raise the shift point the knob is turned clockwise toward the positive numbers.

Full-Throttle Shift Firmness

If the full-throttle shift firmness needs to be decreased, rotate the knob counterclockwise. If the full-throttle shifts need to be firmed up, increase the shift firmness by rotating the knob clockwise.

When making adjustments, turn the knob by one position then retest. Repeat as necessary. Keep in mind that a softer shift may result in higher engine rpm during the shift, therefore you may have to adjust your high throttle shift point selected in the previous step.

Low/Light Throttle Shift Points

Drive the vehicle at light throttle and adjust the low-throttle shift points as necessary. Rotate the knob clockwise to make the shifts occur at a higher rpm. Rotate the knobs counterclockwise to make the shifts happen at a lower rpm.

Installation of the TCM-2000 is similar to the Simple Shift; the TCU is mounted and the wiring harnesses are connected. Next, a PC is used to start the TCU software, it will auto-detect the presence of the transmission controller and the current operating parameters of the TCU will appear on the screen. At that point the transmission's functions can be tailored to its intended use. Detailed instructions on tuning the TCU will be found in the user's manual.

Modern automatics are far superior to their predecessors, but along with the advantages these new transmissions offer comes the requirement of a standalone management system when they are transplanted into an older environment. Not long ago installing a contemporary, computer-controlled automatic transmission in a custom classic truck was considered too complicated to contemplate, but PCS has made it easy with the Simple Shift and the TCM 2000. It's a great way to transform your truck.