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oner
08-15-2003, 09:26 PM
first up I dont even know if I have to fuse the harnesses or eliminate the stock. On top of that Im not sure how Im supposed to connect the msds' harness to the distributor. Im lost, and Im tired of blowing fuses and fuse links. by the way I drive a 92' sentra se-r.

msdtech2
08-18-2003, 10:20 AM
The MSD unit does not get connected to the distributor; it will only interface at the coil. Here is the proper way to install the unit.
Heavy Red and Black to Battery
Take the original wires of the coil positive and connect to the small red of MSD Unit, do not connect back to coil.
Take the original negative wire of the coil and connect to the white wire of MSD Unit, do not connect back to coil.
At this point there should be no wires on the coil.
Then from MSD Unit the orange goes to coil positive and small black to coil negative, these are the only 2 wires on the coil.
Make sure this is the way you have connected.
Thanks,
msdtech2

oner
08-18-2003, 05:12 PM
Originally posted by msdtech2@Aug 18 2003, 08:20 AM
The MSD unit does not get connected to the distributor; it will only interface at the coil. Here is the proper way to install the unit.
Heavy Red and Black to Battery
Take the original wires of the coil positive and connect to the small red of MSD Unit, do not connect back to coil.
Take the original negative wire of the coil and connect to the white wire of MSD Unit, do not connect back to coil.
At this point there should be no wires on the coil.
Then from MSD Unit the orange goes to coil positive and small black to coil negative, these are the only 2 wires on the coil.
Make sure this is the way you have connected.
Thanks,
msdtech2
I finally done that but still no power out the unit. could it be that the white ngative goes to the yellow negative on the distributor harness.

msdtech2
08-18-2003, 05:55 PM
No, once connected the way I described, test the unit by following the next steps.

Checking The MSD Ignition For Spark
The following test will determine if your MSD is producing a spark.



White Wire Trigger:
If you are using the White wire (points or electronic amplifier) of the MSD to trigger the ignition, follow these steps.

1. Make sure the ignition switch is in the Off position.

2. Remove the coil wire from the distributor cap and position the terminal so it is approximately 1/2" from a good ground.

3. Disconnect the MSD White wire from the distributor points or the ignition amplifier.

4. Turn the ignition to the On position. DO NOT CRANK THE ENGINE.

5. Tap the White wire to ground several times. Each time the wire is pulled away from ground a spark should jump from the coil wire to ground. If spark is present, the ignition is working properly.

If there is no spark:

A. Inspect all of the wiring.

B. Substitute another coil and test again. If there is now spark, the coil is at fault.

C. If there is still no spark, check to make sure there is 12 volts on the small Red wire from the MSD when the key is in the On position. If 12 volts are not present, find another 12 volt source and repeat the test.

D. After inspecting the test procedures and inspecting all of the wiring, there is still no spark, the Ignition is at fault. See the Warranty and Service Page for Information.
Thanks,
msdtech2