B&M 120001 SHIFT PLUS 2 TRANS CONTROLLER User Manual
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RPM MODULE - IMPORTANT:
HEI distributors (and possibly others) have a terminal labeled “TACH”. However, this is usually not a clean,
processed tach signal like many aftermarket ignition boxes would supply. Instead, it is simply another terminal
connected to the negative side of the coil. DO NOT connect the TACH IN / RPM MODULE wire in the Shift Plus 2
wiring harness directly to these terminals. The TCU will be damaged. In cases like this, the supplied RPM Module
is
required and will allow connection to the negative side of a dwell controlled coil.
DO NOT bypass the RPM Module and connect the TACH IN / RPM MODULE wire in the Shift Plus 2 wiring harness
directly to the negative side of the coil. This may actually function for a short time but eventually the TCU will be
damaged and system performance will degrade.
DO NOT connect anything from the Shift Plus 2 system to the coil – RPM Module or TACH IN / RPM MODULE wire
when using an aftermarket ignition box.
Use resistor type spark plugs. Non-resistor plugs are very electrically noisy and cause interference with electronics–
including the Shift Plus 2 system. DO NOT use solid core spark plug wires, these are also very noisy.
B&M Speedometer Control Unit (SCU) (Not include in kit):
An optional B&M SCU is available, part# 120004. It uses an electric motor to spin a special speedometer cable to drive
a mechanical speedometer. The SCU wiring mates directly to the Shift Plus 2 wiring harness.
To configure the SCU for use with the Shift Plus 2, remove the SCU's lid to access a row of DIP switches. Set switches
4,5 and 8 to the "ON" position. All others should be "OFF". Once the switches are set, the lid can be replaced. In the
setup wizard or in the advanced options menu, set the SPEEDO PPM to "4000PPM OR SCU".
In other applications, the SCU needs the DIP switches to be set according to a formula based on various drive train
information. The calculation is not required for use with the Shift Plus 2. Once the switches are set as described above,
the Shift Plus 2 handles the rest.It sends a calibrated speed signal to the SCU.
Installation
This is a general outline of the installation process. Read all of the component specific installation instructions for
more detail before beginning the installation.
1.
Connect the TRANS and OUTPUT SHAFT SPEED connectors from the wiring harness to the transmission.
Route the rest of the harness into the engine compartment.
2.
Determine the appropriate method for getting an RPM signal into the TCU. Install RPM Module if needed.
3.
Connect the wiring harness to the RPM signal source.
4.
Connect the wiring harness to a TPS signal source.
If a mechanical speedometer will be used, install the optional B&M SCU and connect the wiring harness to it.
5.
Find a suitable location and mount the TCU. Make sure the wiring harness will reach the mounting location.
6.
Connect the BATTERY POS and BATTERY NEG wires DIRECTLY to the battery. These must be run
independently to the battery. DO NOT splice other power or ground wires into these wires. Extend the wires
if necessary to reach the battery. Use automotive grade 16 gauge (or larger) wire.
7.
Connect the 12V SWITCHED wire to a switched ignition source (hot in On/Run and Crank). DO NOT
connect to the positive side of an ignition coil.
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