Fast 30400-KIT-EZ-EF Instructions Manual - page 28

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C.  MSD Crank Trigger – Roll the engine over to TDC on #1 compression stroke.  Install the 

trigger wheel and sensor bracket so that the sensor is lined up with one of the magnets in the 

trigger wheel. 

A wiring adapter will be needed to connect this to the “CRANK TRIGGER” connector in the 

harness.  Matching up the wire colors correctly is important for stable, consistent timing.  If 

they are backwards the engine will still run, but ignition timing will likely be less stable and 

actual timing may drift with RPM away from the commanded value. 

“CRANK TRIGGER” 

CONNECTOR PIN # 

FAST™ 

WIRE COLOR 

MSD CRANK TRIGGER 

WIRE COLOR 

1 

Black 

Violet 

2 

Red 

Green 

In the Setup Wizard, select “FAST Crank Trigger / 2 Wire” on the Ignition Type screen. 

Rotor Phasing 

When using a crank trigger, the distributor’s orientation in the engine is not critical to the ECU. 

However, it is still important to phase the rotor to the cap. This will ensure that the rotor is in 

the correct position throughout the timing sweep in order to fire to the correct cylinder terminal.  

If the rotor is not properly phased, during operation the rotor tip can sweep too far away from 

the correct terminal, causing a weak spark or misfire and a lot of electrical noise. 

1. Roll the motor over to 30° BTDC. 30° is a good average timing that will work well with

most EZ-EFI

®

 installations.  If you know that your engine will be running significantly 

higher or lower timing, please adjust accordingly. 

2. Set the distributor to the #1 position and drop it into the engine. Do not clamp it down yet.

3. Set the cap on the distributor and mark the middle of the #1 terminal on the distributor

body.  Remove the cap.

4. Rotate the distributor body until the center of the mark you made is lined up with the center

of the rotor tip.  Then clamp down the distributor and install the cap.

5. Your rotor is now phased.

D.  MSD 2-Wire Distributor – In stock form, these are not configured for use with aftermarket 

fuel injection systems.  The following procedure must be followed.   

1. Start by locking out the centrifugal advance on your distributor. The distributor must be

physically “locked out” so that the relationship between the pickup and the paddle wheel

does not change with engine speed or load.  Refer to the manufacturer’s instructions for the

proper procedure to lock out the centrifugal advance for your distributor. (This is a very

important step; please do not skip.)

2. Once your distributor is locked out, roll the engine over to TDC on #1 compression stroke,

and set your distributor to the #1 position.

3. Insert your distributor into the engine but do not clamp it down yet.

4. Rotate the distributor body so that the pickup is aligned with the closest paddle on the

paddle wheel.  It is important for this the paddle to be as centered as possible, but there will