© 2000 Directed Electronics, Inc. Vista, CA
5
installation points to remember
q
IMPORTANT!
This product is designed for fuel-injected, automatic transmission vehicles only.
Installing it in a standard transmission vehicle is dangerous and is contrary to its intended use.
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Please read this entire installation guide before beginning the installation. The installation of this remote
start system requires interfacing with many of the vehicle’s systems. Many new vehicles use low-voltage or
multiplexed systems that can be damaged by low resistance testing devices, such as test lights and logic
probes (computer safe test lights). Test all circuits with a high quality digital multi-meter before making con-
nections.
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Do not disconnect the battery if the vehicle has an anti-theft-coded radio. If equipped with an air bag, avoid
disconnecting the battery if possible. Many airbag systems will display a diagnostic code through their
warning lights after they lose power. Disconnecting the battery requires this code to be erased, which can
require a trip to the dealer.
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Check with the customer on status LED location.
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Remove the domelight fuse. This prevents accidentally draining the battery.
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Roll down a window to avoid being locked out of the car.
To test for a tachometer wire, a multimeter capable of testing AC voltage must be used. The tachometer wire will
show between 1V and 6V AC. In multi-coil ignition systems, the system can learn individual coil wires. Individual
coil wires in a multi-coil ignition system will register lower amounts of AC voltage. Also, if necessary, the system
can use a fuel injector control wire for engine speed sensing.
Common locations for a tachometer wire are the ignition coil itself, the back of the gauges, engine computers,
and automatic transmission computers.
IMPORTANT!
Do not test tachometer wires using a test light or logic probe! This will damage the vehicle.
How to find a tachometer wire with your multimeter:
1. Set to ACV or AC voltage (12V or 20V is fine).
2. Attach the (-) probe of the meter to chassis ground.
3. Start and run the vehicle.
4. Probe the wire you suspect of being the tachometer wire with the red probe of the meter.
5. If this is the correct wire the meter will read between 1V and 6V.
finding the tachometer wire
before beginning the installation
