MSD Noise Filter Capacitor
PN 8830
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Parts Included:
1 – Noise Filter Capacitor
1 – Mounting Bracket
2 - #10 Cup Washers
1. For best results, it is recommended to mount the Capacitor as close as possible to the MSD Ignition
Control. Find a secure mounting point and mark the location of the mounting holes. Use a 3/16”
bit to drill the holes and use the supplied screws to mount the Capacitor.
2. Mark the point where the MSD’s heavy Red and Black wires will be connected to the Capacitor
terminals (note that there is a positive (+) and a negative (-) terminal. Strip about 1¼” of insulation
from the wire at this point (Ringlug terminals can also be used).
3. Form a loop at the stripped wiring point and attach the Red to the positive terminal and the Black
wire to the negative terminal with the supplied hardware as shown in Figure below.
2 – 10-32 x 3/8” Screws
4 – Star Washers
1 – Cover
Figure 1 Installing the Noise Filter Capacitor.
IDENTIFYING AND PREVENTING RADIO NOISE
Radio noise can be frustrating but there are steps you can take to isolate the problem. If the noise
disappears when the MSD is bypassed, then the ignition has added a factor that directly, or indirectly
causes the interference.
Due to the increased output of the MSD, the breakdown of items like the spark plug wires, spark
plugs or related components may be brought into the light so the ignition components should be
inspected. Also check the following:
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• The chassis and engine must have a common ground. A ground strap from the frame to the engine
is important. All radio, CD players, CB systems and other accessories must have a common ground
connection to the chassis as well.
• The Heavy Black wire of the MSD must be grounded to the battery negative terminal, the chassis
or the engine.
• The mounting location of the MSD should be away from the vehicle’s antenna.
• The spark plug wires must be spiral or helically wound wires and in good condition. Solid core
wires cannot be used due to their inability to suppress electrical noise. Helically wound wires are
designed to suppress electrical noise.
Radio noise can be broken down into two distinct categories; Radio Frequency and Supply Line.
Radio Frequency noise is generated by the secondary side of the ignition (coil wires, cap, rotor,
spark plug wires). This noise is radiated into the air and picked up by the antenna. This noise will be
noticeable on the AM band and will be louder between stations. The FM band may also be affected
slightly. If you play a tape or CD, the noise will go away. Maintaining the secondary side of the ignition
system is important in eliminating radio frequency noise.
Supply Line noise is caused by varying loads of the vehicle’s supply voltage. These variances are
amplified through the radio’s 12 volt supply wire and are heard through the speakers. Supply line
noise will be audible on AM and FM as well as during tapes or CDs. For Supply Line noise, the MSD
Noise Capacitor will help.
Service
In case of malfunction, this MSD component will be repaired free of charge according to the terms of the warranty.
When returning MSD components for warranty service, Proof of Purchase must be supplied for verification. After
the warranty period has expired, repair service is based on a minimum and maximum fee.
All returns must have a Return Material Authorization (RMA) number issued to them before
being returned. To obtain an RMA number please contact MSD Customer Service at 1 (888) MSD-7859 or visit
our website at www.msdperformance.com/rma to automatically obtain a number and shipping information.
When returning the unit for repair, leave all wires at the length in which you have them installed. Be sure to include
a detailed account of any problems experienced, and what components and accessories are installed on the vehicle.
The repaired unit will be returned as soon as possible using Ground shipping methods (ground shipping is covered
by warranty). For more information, call MSD at (915) 855-7123. MSD technicians are available from 7:00 a.m. to
5:00 p.m. Monday - Friday (mountain time).
Limited Warranty
M
SD warrants this product to be free from defects in material and workmanship under its intended normal use*,
when properly installed and purchased from an authorized MSD dealer, for a period of one year from the date of
the original purchase. This warranty is void for any products purchased through auction websites. If found to be
defective as mentioned above, it will be repaired or replaced at the option of MSD. Any item that is covered under
this warranty will be returned free of charge using Ground shipping methods.
This shall constitute the sole remedy of the purchaser and the sole liability of MSD. To the extent permitted by
law, the foregoing is exclusive and in 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 used on an application other than what MSD markets the
product, the warranty will be void. It is the sole responsibility of the customer to determine that this item will work for
the application they are intending. MSD will accept no liability for custom applications.
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© 2012 Autotr onic Co ntrols Corpor ation
FRM28600 Revised 12/11 Printed in U.S.A.