25
Orange/Black Wire:
Connection Required
The Orange/Black wire is the engine detect wire. The RS unit utilizes three
different methods of monitoring the vehicle during the remote starting process.
Consider all methods before deciding which one to use. Normally the Smart Start
method is used.
1) Vacuum Switch Sensing:
This method uses an optional Vacuum switch to verify that the vehicle' engine is
running. The Orange/Black wire connects to one of the Vacuum switch's wires, the
other wire is connected to chassis Ground. Connect the Vacuum switch using a
"T" connector to a vacuum hose on the engine's intake manifold.
1) Position the 3-way selector switch for Vacuum switch operation
(right position)
.
2) Locate the Smart Start & Tach Sense adjustment screws and LED indicators.
3) Turn BOTH adjustment screws completely counterclockwise.
Note: Using a multimeter set to Ohms, measure the resistance of the Vacuum
switch. The switch should read Zero resistance when the engine is "Off" and read
Maximum resistance (open circuit) when the engine is running. If this is not the
case, relocate the vacuum connection.
26
2) Smart Start:
This method uses a voltage sensing circuit which reads the vehicle's voltage before
attempting to start, and then monitors for a voltage increase which occurs when the
alternator has output. The Orange/Black wire connects to a constant 12 Volt source
(i.e.: the vehicle's battery).
Note: When using this method Programmable Jumper
#
4 will increase/decrease
the starter motor cranking time.
1) Position the 3-way selector switch for Smart Start
(center position)
.
2) Locate the Smart Start & Tach Sense adjustment screws and LED indicators.
3) Turn BOTH adjustment screws completely counterclockwise.
4) Start the vehicle.
5) Begin tuning the Smart Start adjustment screw slowly clockwise until the LED
indicator begins to flash. The flashes confirm that the unit is sensing the engine.
6) Turn the vehicle Off.
7) Confirm that the unit is not picking up noise from other vehicle circuits:
a. Without starting the engine, turn the ignition key to the "On" position.
b. If the LED indicator remains "Off" the unit has been properly tuned.
c. If the LED indicator flashes there is noise on the Orange/Black wire's connec-
tion and it will be necessary to relocate the connection.
27
3) Tach Sense:
If the vehicle is generally hard to start
(requiring the starter to be engaged for more
than 1 second)
this method will produce more consistent remote starting. With this
method the Orange/Black wire reads the engine speed
(tach)
information from a
wire in the vehicle. The Orange/Black wire connects to the vehicle's tach wire,
which is found in the engine compartment, although in some cases it may also be
located inside the vehicle. To use a multimeter to verify the correct tach wire, set it
for AC Volts scale. The correct wire will read 1 to 6 volts AC with the engine idling,
and will increase with engine speed.
Note: When using this method Programmable Jumper
#
1 will increase/decrease
the unit's sensitivity.
1) Position the 3-way selector switch for Tach Sense
(left position)
.
2) Locate the Tach Sense & Smart Start adjustment screws and LED indicators.
3) Turn BOTH adjustment screws completely counterclockwise.
4) Start the vehicle.
5) Begin tuning the Tach Sense adjustment screw slowly clockwise until the LED
indicator illuminates solid, then turn the vehicle Off.
- To increase the crank time, tune the adjustment screw counterclockwise.
- To decrease the crank time, tune the adjustment screw clockwise.
28
Orange Wire:
Connection If Desired
The function of the Orange wire is to provide a Negative 250ma auxiliary output
which may be used to operate a starter motor "Anti-Grind" relay.
Ignition Switch
87a
30
87
85
86
Coil
Connect "Switch" side of cut wire
to terminal
#
30 of the relay.
Control
Module
Starter Motor
Orange Wire
Connect "Motor" side of cut wire
to terminal
#
87a of the relay.
Note: Connect 12-gauge
Green starter wire to the
motor side of the cut wire
Diagram
#
11
