HOW TO INSTALL POWERSTROKE CAC SOTF

CAC SOTF FORD 3.0 AND 6.7 POWERSTROKE

Tools You’ll Need

  • 8mm / 10mm socket or wrench

  • Trim tool or flathead screwdriver

  • Flashlight

  • Zip ties

  • Drill + step bit (only if mounting a new switch location)

Step-by-Step Installation

1. Disconnect Both Batteries

  • Disconnect both negative battery terminals

  • This prevents CELs and accidental shorts

2. Locate the CAC (Boost / MAP) Sensor

The CAC SOTF cable intercepts the boost/MAP sensor, typically located:

  • On the charge pipe

  • Near the intake manifold

  • Or on the intercooler piping

3. Unplug the Factory CAC Sensor

  • Press the locking tab

  • Pull the connector straight off

  • Inspect for bent pins or dirt

4. Install the CAC SOTF Cable (Plug-and-Play)

  • Plug the male end of the SOTF cable into the CAC sensor

  • Plug the female end into the factory wiring harness

  • Make sure both ends click and lock

Do not force connectors

If it doesn’t click, it’s not seated

5. Route the Switch Wiring Through the Firewall

  • Find an existing rubber grommet in the firewall

    • Common areas: behind brake booster or steering column

  • Push the switch wiring through carefully

  • Reseal grommet if needed

6. Mount the SOTF Switch Inside the Cab

Popular mounting spots:

  • Lower dash panel

  • Kick panel

  • Center console

  • Factory blank switch location

7. Secure the Wiring

  • Zip-tie wiring away from:

    • Exhaust components

    • Steering shaft

    • Pedals

  • Avoid sharp edges and moving parts

8. Reconnect Batteries

  • Reconnect both negative terminals

  • Tighten snug (don’t overdo it)

9. Verify Proper Operation

  • Key ON (engine OFF)

  • Rotate switch and confirm positions change

  • Start engine and check for:

    • No CEL

    • Normal idle

    • No warning messages

Do NOT switch tunes under throttle
Only switch:

  • At idle

  • Or steady cruise (light throttle)

Important Notes (Don’t Skip)

  • CAC SOTF changes tunes by altering boost reference input

  • This cable does nothing without compatible tuning

  • Switching under load can cause:

    • Limp mode

    • Overboost codes

Quick Troubleshooting

CEL after install

  • CAC sensor connector not fully seated

  • Wrong sensor plugged in (MAP vs BARO)

Truck goes into limp

  • Switch moved under throttle

  • Tune not configured for CAC SOTF

No tune change

  • SOTF not enabled in tuning

  • Switch wiring damaged or pinched