MSD 2-Step Launch Control
for Ford Mod Motors '99-On
PN 8734
Parts Included:
1 - 2-Step Launch Control
1 - Harness
Note: The 2-Step Launch Control is a low-rpm limiter that will not provide nor modify any over-rev pro
tection. The stock high rpm rev limiter will still be active.
The MSD 2-Step Launch Control is designed for Ford Modular Engines with Coil-on-Plug ignitions. The
2-Step Control will provide consistent launches and quick 60-foot times. RPM adjustments are made via
two rotary switches located on the harness side of the unit. The adjustment range is from 1,000 - 10,900
rpm, in 100 and 1000 rpm increment, an LED will illuminate when the launch rev limit is active.
Note: It is recommended to have the service manual for your vehicle.
Note: The engine rpm must drop more than one third of the set launch limit in order to activate. For
example, if the launch limit is set at 3,000 rpm, the engine speed must drop below 2,000 rpm
in order for the launch limit to become active (one third of 3,000 rpm is a 1,000 rpm drop).
Caution: Keeping the engine on a lower rpm limit may cause the Check Engine light to come on
and could potentially damage the catalytic converter.
Parts Bag:
1 - Tap
3 - Mounting Screws
MOUNTING
The 2-Step Control can be mounted in any position but keep in mind to mount it so the rotary dials
are accessible for adjustments. Hardware is supplied for mounting. Before mounting the unit, con-
firm that the wiring harnesses reach their connections.
-
WIRING
8-WIRE CONNECTOR
TAN (8)
RED
BLACK
BLUE
WHITE/BLUE
LED
The built-in LED will illuminate when the 2-Step Launch Control is activated. It will also, illuminate
when there is no rpm signal.
Note: Refer to your service manual for coil accessibility.
Signal Connections.
8-WIRE CONNECTOR
12-Volt Connection through this single Red wire.
3-WIRE CONNECTOR
Connects to a good engine ground or the negative battery terminal.
Activation Wire. When grounded, the launch feature will be active.
Activation Wire. When switched to 12 volts, the launch feature will be active.
2 INSTALLATION INSTRUCTIONS
1. Connect the 3-pin harness to the 2-step and connect the Black wire to the good engine or chassis
ground.
2. Disconnect the 2-pin connectors from each of the eight ignition coils.
3. Connect all eight of the 2-pin male connectors from the MSD harness into the factory coil connectors.
wires.
5. Turn the key to the On position – do NOT start the engine. Look at the LED on the 2-Step:
LED On – This confirms that the wiring is correct and you can move to step 6 (Figure 1).
LED Off – The wiring is different for this application and needs to be changed. Turn the key Off,
plug the 8-pin connector with the eight Gray wires into the connector with the single
Red wire (Figure 2).
6. Connect the 8-pin harness with the tan wires to the remaining connector on the harness.
7. Connect all eight of the female 2-pin connectors from the MSD harness into the factory coils.
ACTIVATION
WIRES
WHITE BLUE
BLUE
STEP 4
ACTIVATES
WITH 12 VOLTS
OR GROUND
GROUND
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TAN
RED
GRAY
STEP 2
BLACK
STEP 3
Figure 1 Wiring the 2-Step Launch Control.
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