Tach problems
Tach problems I am having issues with my tach not working. I have checked and everything is connected right but it does not work. Is there a way to check the wire coming from the computer???
4. Your Tachometer will work with 8, 6 or 4 cylinders. It is preset for 8
cylinders. If you have a 6 cylinder cut one of the looped wires. If you
have a 4 cylinder cut both looped wires.
5. Your Tachometer is designed to use the factory lighting already
existing in your dash. Note: Now is a good time to replace your old
dash bulbs.
6. The Brains of your Tachometer are located in the Red Shotgun Shell.
There are (3) three wires exiting it:
Red Wire
Black Wire Green Wire
12V Ignition Switch (Fused Ignition port on Fuse Panel)
Ground
Negative side of the Coil (or Tach Terminal on Electronic Ignitions)
Zero Set: The Tachometer will point to Zero with the ignition on and the motor not running. You can check the setting prior to installation. The Tachometer will not return to zero when the engine is turned off.
Cautions:
1. Disconnect the battery during the installation.
2. Read the instructions and follow the diagram.
3. Connections need to be clean and tight.
4. Tachometer requires a minimum of 10 volts. Voltage must be
steady.
5. Check pointer prior to installation to make sure it does not hit screw heads on face of Tach.
3/4/2010

You would put the pull up resistor between the ignition wire you're powering the tach with, and the tach output wire coming out of the PCM. Would be before your bullet thing. Also needs to be set to 4 cylinder mode.
