Dakota Digital CRS-3000-3 Manual page 14

CONTROL SWITCH INSTALLATION
If your cruise control switch is the type which clamps on the turn signal lever, requires cutting the turn signal lever, or is
mounted on the instrument panel, follow the instructions packaged with it. If you have a switch which replaces the
complete original equipment turn signal lever, remove the existing lever and install the cruise control switch and lever
assembly as instructed in the vehicle shop service manual.
WIRING ATTACHMENTS TO VEHICLE
Utilize the wiring information below to make the necessary wiring harness connections to your vehicle.
CAUTION: Before making any wiring connections, be sure to disconnect your vehicle's negative battery cable to
avoid electrical shock and/or damage to the vehicle's electrical system.
Black - Ground Wire
In order to find a good ground for the cruise system, find a vehicle ground point which is a clean unpainted metal
surface. If the cruise control does not "see" ground at all times, it will not function.
NOTE: Do not use the engine as a grounding point. Do not use the cable bracket as a grounding point.
NOTE: To find a place to get electrical power you will need to ground one lead of your test light or volt-ohmmeter. Find
electrical ground by turning ON the ignition switch and touching one lead to a "Hot" fused terminal at fuse panel; touch
other lead to unpainted metal part of vehicle. The metal you touch, if it makes continuity, is ground. The bracket for the
parking brake lever is usually a good ground. Turn the ignition OFF.
Brown - Accessory Power
Find a fuse at the fuse panel that supplies power to one of the vehicles accessories. It should be +12 volts when the
key is ON and zero (0) volts when the key is OFF or in the START (CRANK) position.
Red - Brake Positive
"Hot" side of brake switch: Use the wire at the brake switch connector with constant +12 volts
Violet - Brake Negative
"Cold" side of brake switch: Use the wire at the brake switch connector with close to zero (0) resistance when brake is
not pressed, and +12 volts or open resistance when brake is pressed. If you have LED tail lights or an LED brake light
please refer to page 3 with the alternate wiring method with a relay.
Dark Blue - Tachometer (TACH) Wire
.
The TACH function is a safety feature of the Cruise Control If a vehicle with an automatic transmission is accidentally
"knocked" into neutral while the vehicle is in motion and the Cruise Control is active, the TACH wire, when connected,
will disengage the Cruise Control before engine over-rev. If the TACH wire is not "hooked-up", the cruise control will
function; however the TACH over-rev safety feature will be inactive; this is dangerous and not recommended.
Dakota Digital, INC. always recommends the attachment of the TACH wire.
On a vehicle with a manual transmission, the TACH wire connection is not required only when CLUTCH
DISENGAGEMENT SWITCH (Kit# 250-4206) has been installed; this will take into account the TACH over-rev safety
feature. The TACH wire should be grounded when using a clutch disengagement switch to ensure that the wire does
not introduce "trashy" signals into the system.
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