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10RStager Installation and Operational Manual 10R80 Transmissions
Note: The following instructions are for 8 cylinder 10R80 Automatic Transmission installations for 2018 and
newer model years. Contact True Motorsports for other 10R80 configurations.
This manual will outline the wiring of the 10RStager. Ensure that each connection is a reliable connection that
will not cause any intermittent behavior on the signals. For power connections to the 10RStager, ensure that
the power source is a switched ignition source that powers up when you key on and that it has an appropriately
sized fuse for the circuits connected. The 10RStager consumes less than 0.5 Amps during operation.
The 10RStager must be wired per the instructions outlined in this document and is designed to work for first
gear and second gear launch setups. The wiring for the second gear Transbrake is slightly different than the
first gear and also requires an ECU tune that enables second gear launches. The 10RStager will not operate
without interfacing to the transmission and brake pedal wiring. The brake pedal wiring must be wired to prevent
accidental engagement of the transbrake. Note that the foot brake pedal must be engaged prior to pressing the
Transbrake button to engage the Transbrake.
Perform the installation in the following order:
1. Turn the ignition off, open the hood and disconnect the battery. Locate the vehicle PCM (Powertrain
Control Module). This should be under the hood near the front passenger side.
2. Locate and install the 10RStager control box in a location that is within the cab of the vehicle. Do not
locate this device in the engine bay. Follow the wiring diagram instructions below and on the following
pages. When wiring up this device, ensure that best practices are followed while wiring up the
10RStager. It is recommended that each connection be soldered and heat shrink applied.
3. The instructions for wiring the 10RStager will be outlined on the following pages. The diagram shown
on pages 2 and 3 should be used as an overall system wiring diagram. Follow the instructions outlined
in item 4 below, to wire the 10RStager per the following wiring diagrams:
Rev C
Page 1
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Summary of Contents for True 10RStager
- Page 1 Control Module). This should be under the hood near the front passenger side. 2. Locate and install the 10RStager control box in a location that is within the cab of the vehicle. Do not locate this device in the engine bay. Follow the wiring diagram instructions below and on the following pages.
- Page 2 FIRST GEAR - 10R80 Wiring Diagram reference for the 10RStager ● Cut the SSF wire (Blue/Grey) and connect the Dark Blue Wire to the PCM side ● Cut the SSC wire (Grey/Orange) and connect the Grey Wire to the PCM side ●...
- Page 3 SECOND GEAR - 10R80 Wiring Diagram reference for the 10RStager ● Cut the SSF wire (Blue/Grey) and connect the Dark Blue Wire to the PCM side ● Cut the SSB wire (Green/Brown) and connect the Light Green Wire to the PCM side ●...
- Page 4 4. Locate the PCM which is located on the right side of the engine. Disconnect the Top PCM connector. Run six wires with SSB, SSC and SSF as part of the naming convention out to the PCM/Transmission connector located in the engine compartment. Run through the passenger side firewall grommet. Page 4...
- Page 5 5. On the PCM connector, remove at least 6-8 inches of the black tape so that you can access the wires. Page 5...
- Page 6 6. Identify the SSF, SSC, and SSB solenoid wires so that the 10RStager can be inserted into this interface. FIRST GEAR ONLY Page 6...
- Page 7 SECOND GEAR ONLY The SSB, SSC(first gear only) and SSF signals will pass through the 10RStager during normal operation. When the Transbrake is activated, the 10RStager will manipulate the solenoids to create a Transbrake. Page 7...
- Page 8 BPP Switch Interface Wiring Diagram 8. On the 10RStager wire harness, connect the Red power wire to a switched 12V power source so that it will only turn ON when Ignition Power is applied or when a dedicated switch is used. The 10RStager consumes less than 0.5 Amps of current while under maximum load.
- Page 9 10RStager Operator's Manual The 10RStager requires two input buttons for operation. Each input must be pulled above 10 volts to become active. The first input button will activate the Transbrake on the 10R80. The foot brake pedal on the vehicle must be depressed before the Transbrake will engage, as this is designed so that the Transbrake will not be accidentally depressed.