"Auto-Cruisin' in the Tiger"

An Article by Larry Paulick
November, 2002

Page 2

The Control Switch

The control switch can be mounted in several locations, but this installation uses the ashtray as a location. If you don’t smoke, or allow smokers in your car, this location is by your right hand and convenient to operate the cruise control.

The concave top of the ashtray is flattened, so that the control switch could be mounted to this location. The bottom of the ashtray is cut, so that the modified ashtray could fit farther down in the ashtray receiver. This allowed the top of the ashtray to close, hiding the control switch

Mounting the control switch with the self adhesive tape on the flattened ashtray, and running the wires down through the bottom of the console box that holds the ash tray unit completed this part of the job.

The wiring harness is run from the control switch under the carpet on the right side of the trans tunnel, to the wiring harness connection from the servo assembly.

Magnetic Speed Sensor

The Tiger or Alpine needs a source of speed to send input to the servo assembly, to maintain the speed that you set. This is done by using a speed sensor on the drive shaft. A magnet is wired on the drive shaft, and a sensor that picks up the revolutions of the drive shaft is mounted adjacent to the magnet. .

The speed sensor is mounted through the drive shaft tunnel, using the threaded bolt, and nuts on either side of the sensor to adjust the distance between the sensor and the magnet. This allows for an accurate 3/8” space between the sensor and the magnet, does away with additional brackets, and provides a solid mount for the sensor..

You can run the wire through the top of the drive shaft tunnel, and under the glove box, and then along with the rest of the wires from the control switch to the wiring harness to the servo assembly. Use a grommet where the wires go through the drive shaft tunnel to seal this area.

Carb Mounting of Servo Assembly Wire

The end of the servo assembly control wire is mounted to the carb throttle. This is what moves the carb throttle to keep the constant speed that you have chosen. There are several ways to mount the cable, and there are enough different types of brackets and connectors to do just about any connection.

This installation used the current throttle cable bracket bolted the carb base to secure the cable, and then ran the flexible cable to the carb throttle using the supplied bead chain and connectors.

Again, there are enough accessories to mount just about any carb or mounting bracket you have on your car. There are good pictorials showing different set ups as well.

Electrical Connections

There are several electrical connections described in the instruction manual to finalize the job. They include:

• Brake Disconnect: This connects to the brake switch mounted in the engine compartment, and senses when you put the brakes on, to disconnect the cruise control.
  
  
• Ignition Power: This supplies power to the cruise control, when the ignition is turned on.
  
  
• Dash Light Power: This supplies power to light the control switch for night driving.
  
  
• Clutch Disconnect: The standard electrical set up uses a connection to the negative side of the coil, to sense the engine speeding up, when the clutch is depressed. This is fine on a conventional electrical set up, but it does not work with my MSD unit.
  
  On the MSD setup, a bracket is made to fit around the top of the clutch pedal arm at the top, near the pivot point. A switch is mounted to this bracket, so that when the clutch is depressed, it interrupted the power to the unit, and cuts the unit off.
  

Testing the Unit

The next step is to take the car on the road and test the various functions of the curies control. If you have done each of the steps above correctly, then you can not only test the unit, but you can now enjoy a cruise control on your Tiger or Alpine.

Congratulations you are finished.

Larry