Installation guide

Virtual Tach handles disengaging the starter motor during remote starting – it does not address over-rev. If the

customer wants to have the over-rev protection capability, the tach wire must be connected.

Important: After successfully learning Virtual Tach, a small minority of vehicle starters

may over crank or under crank during remote start. The Bitwriter can be used ﬁne tune

the starter output time in 50mS increments to compensate for such an occurrence.

Learning the Tach (not needed with Virtual Tach)

To learn the tach signal:

1. Start the vehicle with the key. Within 5 seconds, press and hold the Control button.

2. After 3 seconds the status LED on your Control Center lights constant when the tach signal is learned.

3. Release the Control button.

Note: When the tachometer is programmed, the main unit automatically enters the Tachometer engine

checking mode.

Since this unit has the capability to learn the tachometer with the analog input or through D2D from an

interface module, the unit gives conﬁrmation as to which source the unit has learned from. After learning the

tach and releasing the Control button, the system:

Flashes the parking lights once if programmed using the analog tach wire.

Flashes the parking lights twice if programmed using the interface module through D2D.

Neutral safety switch interface

Some vehicles do not have an electrical neutral safety switch. Instead, the vehicle has a mechanical neutral

safety switch that physically interrupts the starter wire and is used when the vehicle is in any drive gear. If the

remote start is interfaced before this switch, it will provide protection from starting in gear. However, some

vehicles combine the column shift mechanism and the mechanical neutral safety switch into one mechanical

part.

Important: You must complete the remote start system installation before doing the follow-

ing test. Ensure that the remote start system is functioning normally. This includes connect-

ing to the brake as a shut-down.

Testing the neutral safety switch

1. Make sure there is adequate clearance to the front and rear of the vehicle because it may move slightly.

2. Make sure the hood is closed and there are no remote start shut-downs active.

3. Set the emergency brake.

4. Turn the key to the “run” position, this releases the shifter.

5. Place the car in drive (D).

6. Place your foot directly over the brake pedal, but do not depress it. Be ready to step on the brake if the

starter engages.

7. Activate the remote start system.

8. If the starter engages, immediately depress the brake to shut the remote start system down. If the

starter does not engage, no additional safety

system is required.

If the starter engages and the vehicle is a General Motors product or Dodge Dakota pickup, refer to

www.

directechs.com

for Document 1008 under the Resource tab. For an alternative shut-down method

which prevents the starter from engaging. If the vehicle is not a General Motors product or a Dodge

Dakota pickup, please call Directed Electronics Technical Support for an alternative shut-down method.

Do not return the vehicle to the customer until this feature is properly installed!