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INSTALLATION INSTRUCTIONS 

5

M S D  

•   W W W . M S D P E R F O R M A N C E . C O M   •   ( 9 1 5 )   8 5 7 - 5 2 0 0   •   F A X   ( 9 1 5 )   8 5 7 - 3 3 4 4

WARNING: Do not touch the coil terminals during cranking or while the engine is running.

•  Is the engine running lean or excessively rich? Inspect the spark plugs and fuel system.

•  Inspect all wiring connections for corrosion or damage. Remember to always use proper 

connections followed by soldering and seal the connections completely.

LED: The LED on the ignition will assist in troubleshooting. If the LED does not flash, there is 

no current through the primary coil wires. This could be due to poor connections at the 

coil, the coil itself or the ignition. Once you confirm that the trigger signal is working, try a 

different coil. See below to test for spark.

If  everything  checks  positive,  use  the  following  procedure  to  test  for  spark.  MSD  also  offers  an 

Ignition Tester, PN 8998. This tool allows you to check your complete ignition system while it is in 

the car as well as the operation of rpm limits, activated switches and shift lights.

CHECKING FOR SPARK

If triggering the ignition with the White wire:

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

2.  Remove the coil wire from the distributor cap and set 

the terminal approximately 1/2” from ground. 

3.  Disconnect the MSD White wire from the distributor’s 

points or ignition amplifier. 

4.  Turn the ignition to the "On" position. Do not crank  

the engine.

5.  Rapidly tap the White wire to ground 

several times 

(the first 3-4 times will not spark). When the wire is 

pulled 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 skip to step 6 

on page 6:

If triggering with the Magnetic Pickup:

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

2.  Remove  the  coil  wire  from  the  distributor  cap  and 

set the terminal approximately 1/2”  from ground. 

3. Disconnect  the  MSD  magnetic  pickup  wires    from 

the distributor. 

4. Turn the ignition to the "On" position. Do not crank 

the engine.

5. With  a  small  jumper  wire,  short  the  MSD’s  Green 

and  Violet  magnetic  pickup  wires  together  several 

times  (the  first  3-4  times  will  not  spark).  Each  time  you  break  this  ground  (rapidly),  a  spark 

should jump from the coil wire to ground. If spark is present, the ignition is working properly. If 

there is no spark skip to step 6 on page 6.

GREEN

JUMPE R

WIRE

VIOLE T

MAGNETIC PICKUP TRIGGER

WHITE WIRE TRIGGER

Figure 6 Checking for Spark with Magnetic Pickup.

Figure 5 Checking for Spark with a White Wire.

Содержание MSD-8 Plus

Страница 1: ...tems Note that when using a single coil both coil positive wires must be connected to the coil RPM LIMITERS The MSD 8 Plus Ignition is equipped with a 2 Step Rev Control The Ignition will accept two rpm modules so two different rev limits can be set One rev limit can be used for over rev protection while the second limit can be activated on the starting line for a lower rpm limit to assist in stag...

Страница 2: ...ht or other add on rpm activated devices The Tach Output Terminal produces a 12 volt square wave signal with a 20 duty cycle SPARK PLUGS AND WIRES Spark plug wires are very important to the operation of your ignition system A good quality helically wound wire and proper routing are required to get the best performance from your ignition such as the MSD Heli Core or 8 5mm Super Conductor Note Solid...

Страница 3: ... only wire that makes electrical contact with the coil negative terminal COIL 2 HEAVY BLACK This wire connects to a good ground either at the battery negative terminal or to the engine BAT HEAVY RED GRAY BAT TACH TACH 2 STEP IGNITION Connects to a switched 12 volt source Such as the ignition key or switch RED WHITE This wire is used to connect to the points electronic ignition amplifier output or ...

Страница 4: ...If you experience a problem with your MSD our research has shown that the majority of problems are due to improper installation or poor connections The Troubleshooting section has several checks and tests you can perform to ensure proper installation and operation of the MSD If you have any questions concerning your MSD call our Customer Support Department at 915 855 7123 7 6 mountain time MISSES ...

Страница 5: ...in the Off position 2 Remove the coil wire from the distributor cap and set the terminal approximately 1 2 from ground 3 Disconnect the MSD White wire from the distributor s points or ignition amplifier 4 Turn the ignition to the On position Do not crank the engine 5 Rapidly tap the White wire to ground several times the first 3 4 times will not spark When the wire is pulled from ground a spark sh...

Страница 6: ...shes check for a coil problem The following wiring diagrams illustrate numerous installations on different vehicles and applications If you experience difficulties when installing your MSD contact our Customer Support Department at 915 855 7123 7 6 Mountain time or e mail us at msdtech msdignition com COIL TERMINALS MSD supplies heavy duty nickel plated terminals for the connections There is also ...

Страница 7: ... TO BATTERY NEGATIVE HEAVY RED TO BATTERY POSITIVE BLUE GRAY MSD SYSTEMS With an MSD Timing Control COIL 1 COIL 1 COIL 2 COIL 2 TO SWITCHED 12 VOLTS PN 8261 PN 8261 BLACK ORANGE BLACK ORANGE TO CHASSIS HEAVY BLACK TO BATTERY NEGATIVE HEAVY RED TO BATTERY POSITIVE BLUE GRAY NOTE WHEN USING A SINGLE COIL BOTH COIL POSITIVE TERMINALS MUST BE CONNECTED TO THE COIL EITHER CONNECT BOTH ORANGE WIRES TO T...

Страница 8: ...n lieu of all other warranties or representation whether expressed or implied including any implied warranty of merchantability or fitness In no event shall MSD or its suppliers be liable for special or consequential damages Intended normal use means that this item is being used as was originally intended and for the original application as sold by MSD Any modifications to this item or if it is us...

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