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Read all
instructions before beginning installation, including the notice of problems at the bottom
of this page.
Wiring Diagram for
Electronic Speed Adapter (ESA)
| White Wire |
+ 12 volts, ignition on |
| Black Wire |
Ground |
| White Wire |
Signal in from the speed sensor |
| Blue Wire |
Signal out to the ECM |
Connections
1. Locate the
vehicle speed sensor (VSS). It is usually located at the rear of the transmission or
rear tail housing. Consult your vehicle owners manual or your local dealer if you
are unable to locate it.
2. Locate the sensor wire
coming from your VSS. This can be accomplished by simply testing each wire from the
VSS with an ohm meter. The wire with the highest ohm reading will be your sensor
wire. Your local dealership may be able to provide you with a color code to
determine the signal wire.
3. Cut the speed sensor wire
no more than six (6) inches from the speed sensor.
4. Connect WHITE wire from the ESA to the end of
the speed sensor wire coming form the VSS.
5. Connect BLUE wire from
the ESA to the end of the remaining speed sensor wire. Caution:
THE ESA MUST BE INSTALLED BEFORE THE ECM, ABS, ANY BUFFERS OR OTHER DEVICES.
6. Connect RED wire from the
ESA to a 12 volt ignition "ON."
7. Connect BLACK wire from the
ESA to GROUND as close to the ESA as possible.
Calibration
1. Use the following formula
to calibrate the ESA: ACTUAL DISTANCE
TRAVELED/DISTANCE TRAVELED PER ODOMETER = RATIO
(Example: 10 miles/12 miles = .840)
This can be calculated by driving the vehicle exactly
ten (10) miles using highway markers. This will give you ACTUAL DISTANCE
TRAVELED. Note your odometer reading before and also after to calculate DISTANCE
TRAVELED PER ODOMETER.
2. Locate your specific ratio
(or the ratio closest to yours) in the ESA Dip Switch settings table. There will be
a series "O" and "I" to the right of your ratio. These represent
the settings for your bank of 12 dip switches located inside the ESA. "O"
represents OFF and "I" ON. Set all 12 switches accordingly, going from
left to right with the first digit representing the setting for dip switch 1.
3. The remaining bank of four
dip switches located inside the ESA will be set according to the type of speed sensor
(VSS) equipped on your vehicle.
Two wire VSS: dip switch 1 ON: 2,3,4 OFF
Three wire VSS: dip switch 2,4 ON: 1,3 OFF
NOTICE: The following problems
have been reported concerning the Electric Speed Adapter:
Automatic Transmissions
| Shift points can change and cause rough shifting |
ABS Lights can come on |
| Torc converter could unlock and lock erratically |
Cruise control may not work |
Standard Transmissions
Cruise control may not work |
These problems seem to occur when there is more than
a 10 mph speed change and do not occur in every instance. Currently the Electronic
Speed Adapter is not recommended for 2000 and newer Ford F Series and 2001 Dodge Rams.
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