Mallory Ignition 6864M User Manual

INSTALLATION INSTRUCTIONS

CT PRO™ IGNITION CONTROL

PN 6864M

FORM 1666 (Rev A) 01/12

The CT PRO™ Ignition Control features a single stage rev
limiting developed especially for the circle track market. It
will control the engine RPM precisely, but its operation is
smooth enough to eliminate unloading of the chassis at a
critical spot on the track.

Battery

The CT PRO™ Series Ignition Control operates on any
negative ground, 12 volt electrical system with a distributor.
It will also work with 16 volt batteries and can withstand
a momentary spike of 24 volts in case of jump starts. This
system delivers full voltage with a supply of 10-18 volts,
and operates with a supply voltage as low as 8 volts. If
your application does not use an alternator, allow at least
15 amp/hour for every half hour of operation. If you crank
the engine with the same battery or other accessories,
such as an electric fuel or water pump, increase the amp/
hour rating.

Coils

The only coil suitable for use with your CT PRO™ Ignition
Control is Mallory’s CT PRO™ Coil P/N 30460. During our
extensive testing, no other coil from Mallory or any
competitor would withstand the stress.

Spark Plugs and Wires

High quality, spiral wound wire and proper routing are
essential to the operation of the CT PRO™ Ignition Control.
This type of wire provides a good path for the spark to follow
while minimizing electromagnetic interference (EMI).

Distributor Cap and Rotor

We recommend installing a new distributor cap and rotor
when installing the CT PRO™ Ignition Control. Be sure the
cap is clean inside and out, especially the terminals and
rotor tip. On vehicles with smaller caps, it is possible for
the air inside the cap to become electrically charged caus­ing crossfire which can result in misfire. You can prevent
this by drilling a couple of vent holes in the cap. Drill the
holes between terminals at rotor height, facing away from
the intake. If needed, place a small piece of screen over the
holes to act as a filter.

CT PRO™ Diagnostic LED

On the end panel of your CT PRO™ Ignition there is a small
hole. Behind this hole is a red LED indicator. This serves
two purposes: when you first turn on the ignition switch,
the LED will flash rapidly 3 times. This indicates that the
ignition system has power, and that the microprocessor is
running properly. In addition, the LED will flash when receiv­ing a proper trigger signal from the vehicle. If, after a normal
power-up, the LED doesn’t flash when cranking the engine,
you should check your triggering circuit for problems. If the
LED flashes when the engine is cranked, but there is still no
spark, the problem lies somewhere else.

CT PRO™ Cylinder Selection

Your CT PRO™ Ignition comes from the factory set up for 8
cylinder operation. If you want to use this ignition with a 4 or
6 cylinder engine, rotate the “CYL” cylinder select switch to
either the 4 or 6 position.

NOTE: Do not use solid core spark plug wires with the
CT PRO™ Ignition Control.

Routing

Wires should be routed away from sharp edges, moving
objects, and heat sources. Wires that are next to each other
in the engine’s firing order should be separated. For exam­ple, in a Chevy V8 with a firing order of 1-8-4-3-6-5-7-2, the
#5 and #7 cylinders are positioned next to each other on
the engine as well as in the firing order. Voltage from the #5
wire could jump to the #7 wire. This could cause detonation
and engine damage.

For added protection against cross-fire, Mallory offers
PRO SHIELD insulated sleeving. Pro Shield is a glass
woven, silicone coated protective sleeve that slides over
your plug wires. It also helps reduce damage from heat
and sharp objects.

Welding

To avoid any damage to the CT PRO™ Ignition Control
when welding on the vehicle, disconnect the positive (red)
and negative (black) power cables of the CT PRO® Ignition
Control. It is also a good idea to disconnect the tachometer
ground wire as well.

MALLORY IGNITION www.mallory-ignition.com

Mounting

The CT PRO™ Ignition Control can be mounted in any
position. If you mount it in the engine compartment, keep
it away from moving objects and heat sources. When you
find a suitable location to mount the unit, make sure all
wires of the ignition reach their connections. Hold the
ignition in place and mark the location of the mounting
holes. Use the appropriate size drill to accommodate your
mounting hardware

Wiring

The CT PRO™ Ignition Control is designed to be used with
the industry standard circle track style 6-Pin Harness. If
you are installing the ignition in an application that is not
so equipped, we recommend you purchase Mallory Part
Number 29605 6-Pin Harness, which is 6 feet long and
terminated with the matching connector on one end. A 4
foot power harness is available as Mallory part number 29606.

Grounds

A poor ground connection can cause many frustrating
problems. When a wire is specified to go to ground,
connect it to the chassis. Always connect a ground strap
between the engine and chassis. Connect any ground wires
to a clean, paint-free metal surface.

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WIRE FUNCTIONS
Power Leads

The 2 pin connector delivers battery voltage to the ignition:
Heavy Red Connects directly to the battery positive (+)

terminal or to a positive battery
junction. It could also be connected to the
positive side of the starter solenoid. NOTE:
Never connect this wire to
the alternator.

Heavy Black Connects to frame or chassis ground.

COMMON COLORS FOR MAG PICKUP WIRES

Distributor Mag + Mag –
Mallory Crank Trigger Purple Green
Mallory Billet Competition
Distributor, Series
Nos. 81 and 84 Orange Purple
Mallory CT PRO™ Orange Purple
MSD Orange/Black Violet/Black
MSD Crank Trigger Orange/Black Violet/Black
Ford Orange Purple
Chrysler Orange/White Black

The 6 pin connector should be wired as follows:
A - Red – 12V Ignition power
B - Brown - Tach signal
C - Black - Coil “-” Minus
D - Orange - Coil “+” Plus
E - Green - Mag P/U “-” Minus
F - Purple - Mag P/U “+” Plus

The 1 Pin Connector is a points input that can be used for
a kill switch. Grounding this lead will ground the magnetic
trigger input.

ROUTING WIRES

Route all wires away from heat sources, sharp edges, and
moving objects. Route the trigger wires separate from the
other wires and spark plug wires. If possible, route them
along a ground plane, such as the block or firewall, which
creates an electrical shield. The magnetic pickup wires
should be routed separately and twisted together to help
reduce extraneous interference.

WARNING: The CT PRO™ Ignition Control is a capacitive dis­charge ignition. High voltage is present at the coil
primary terminals. Do not touch these terminals or connect
test equipment to them.

RPM Limiter Settings

The single stage CT PRO™ Rev Limiter is adjusted by
using the pair of switches on the right side on the end plate
labeled “RPM LIMIT”. The switch nearest the diagnostic
LED, the left hand switch of the pair, is used to adjust in
1,000 RPM Increments and the right hand switch is used to
adjust in 100 RPM increments. Example - If the left hand
switch of the pair is adjusted to the 7 and the right hand
switch of the pair is adjusted to the 5, the rev limiter is
adjusted to 7,500 RPM.

MALLORY IS A TRADEMARK OF PRESTOLITE PERFORMANCE
10601 MEMPHIS AVE. #12, CLEVELAND, OH 44144

PHONE [phone] • FAX [phone]

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www.mallory-ignition.com MALLORY IGNITION

FORM 1666

(REV A) 01/12

Made in U.S.A.

Printed in U.S.A.