Avital AviStart 4500, Installation Manual

Tach Wire (RPM Monitoring)
The AviStart is designed to monitor the vehicle RPM by connecting directly to
the vehicle tachometer wire which is usually located at the distributor,
ignition coil or diagnostic plug. On most vehicles, the tach wire is easily
accessible. If the tach wire is not accessible, there are several alternative
choices.  Contact Avital Technical Support Department for alternate choices.

The following procedure for testing the vehicle tach wire is not exact and may 
vary with different vehicle make, model and year. We recommend that you
refer to your AviFax documents for tach color code and location information.
1. Set your voltmeter to the AC voltage scale.

2. Start the vehicle. Use the voltmeter to find a wire that will show 1 to 5

volts AC while the vehicle is idle and increase an additional 1 to 5 volts
AC when the engine RPM is raised to 3000-4000 RPM.

3. Connect the WHITE/GREEN wire to the vehicle tach wire.

Hood Switch (Mandatory)
As a safety precaution, the hood switch prevents the vehicle from starting
when the hood is open. If the vehicle is in the remote start mode and the hood 
is opened, the remote start will immediately shut down.

1. Choose a location under the hood away from direct exposure to water or

water drain areas.

2. Check for proper hood clearance.

3. Make sure the hood switch will make contact with a flat surface on the

hood when closed.

4. Drill a 

5

/

16

" mounting hole.

5. Mount the hood switch.
6. Connect the TAN wire to the hood switch.

7. Make sure the hood makes contact with hood switch when closed and

presses the hood switch straight down to prevent wear.

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AviStart 4500 Installation Manual - 0898 Rev. A