MSD 82903 Installation

MSD Modified Honda Distributor Cap & Rotor

PN 82903, PN 82923 & PN 82933

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Parts Included In This Kit

1 - Distributor Cap
1 - Coil Wire

WARNING: During installation, disconnect the battery cables. When disconnecting the battery

cables, always remove the Negative cable first and install it last.

Note: The Modified Cap is designed so that you can remove the stock internal coil, and use a higher output

external coil. The stock internal coil MUST be removed before the installation of this cap. Failure to
do so will cause damage to the MSD cap.

Note: Spark plug style, 90° terminals are required

with this MSD cap.

1 - Rotor
1 - Parts Bag
1 - Mini-Stripper-Crimper

INSTALLATION:

1. Mark the location of each plug wire on the
distributor cap, then remove the wires. Remove
the stock distributor cap, rotor and dust cover.

2. Locate the coil wires and note their color and
location. On the majority of Honda or Acura
engines, the Black/Yellow wire is positive. The
coil negative wire is generally White/Blue, Blue,
Green/Yellow or Green. In some cases, the coil
itself is marked negative (-) and positive
(+).

Figure 1 Primary Wiring with the Coil Removed.

Note: If you have a question as to the wires’

polarity, use a volt-meter and probe
each wire with the ignition key turned
to the On position. Coil positive will
show 10-12 volts.

3. Once you determine the polarity of the
coil wires you will need to extend the
wires to reach the MSD external coil. Cut
the factory terminals off and solder them
to 14-gauge wiring. Seal the soldered joint
with shrink sleeve or electrical tape.

4. Depending on the model of distributor
you have, you may need to drill a hole
in the new cap to route the wires out. In
some applications the factory rubber
seal is thick enough to cut and slide the
new wires out.

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Figure 2 Wiring with a Blaster SS Coil.

2 INSTALLATION INSTRUCTIONS

MAGNETIC PICKUP (NOT USED)

REV

LIMITER

DIGITAL 6AL

GRAY

TACH OUTPUT

BLACK/YELLOW

WHITE/BLUE

Figure 3 Wiring an MSD 6-Series Ignition with a Blaster SS Coil.

5. Replace the rotor. Depending on the application, the dust cover may need to be removed or the
engine may need to be rotated to access the rotor retaining screw (figure 4). Install the cap and
wires.

REMOVE DUST COVER

ROTOR RETAINING SCREW

Figure 4 Replacing the Rotor.

ASSEMBLING THE COIL WIRE

Once the cap is installed and the coil is wired, you will need to
assemble a coil wire. You will need a razor blade and a 4-inch vice.

The Mini-Stripper-Crimper is an all in one spark plug wire stripper
and crimp tool. It will work with both MSD 8.5mm Super Conductor
and 8mm Heli-Core wires to produce a strong, professional crimp.

TERMINALS

MSD offers several different terminals with our Universal wire sets.
There are two terminal styles used, either a standard style or the
Dual Crimp Terminal (Figure 5). The standard design requires
stripping more of the wire sleeve because the conductor will be
bent under the terminal. The Dual Crimp has specific crimp tabs
for the conductor which require needle nose pliers.

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Figure 5 Identifying the Different

Style Terminals.