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685 Datasheet, PDF (1/12 Pages) Mallory performance club – ELECTRONIC IGNITION CONTROLS | |||
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INSTALLATION INSTRUCTIONS
FORM 1478 (REV. D) 09/2008
HYFIRE® VI SERIES OF ELECTRONIC
IGNITION CONTROLS
HYFIRE® VI Ignition System Part No. 685, Advanced
HYFIRE® VI Ignition System Part No. 6851, Basic
For applications triggered by points, Mallory Electronic Ignition Distributor (all models), original equipment electronic
ignition ampliï¬ers and magnetic trigger pulses (magnetic pickup distributor or crank trigger ignition). Optional adapters are
available for easy connection to early model Delco/GM HEI Systems, late model GM HEI/EST Systems, Ford TFI Systems,
and OEM magnetic pickup (non-computer; Ford DuraSpark, GM HEI and Mopar/Chrysler Electronic Systems).
This product is legal to sell, distribute or install on vehicles in California. C.A.R.B. Executive Order D-70-26.
NOTE: Mallory HYFIRE® VI Electronic Ignition Controls are not compatible with distributorless systems or positive
ground applications. The RPM Limiter in the HYFIRE® VI (Part No. 685) will not work properly with odd-ï¬re or
semi-even ï¬re V6 applications.
Parts included in this kit:
1 HYFIRE® VI Electronic Ignition Control - Part No. 685 or 6851
1 Ignition Control Harness - Part No. 29348
2 Terminal Connectors - Part No. 450
1 Bypass Connector
4 Cable Ties
2 Spade Terminals
8 Ring Terminals, 1/4â
1 Ring Terminal, 3/8â
5 Spade Receptacle Terminals
4 10-32 Screws
4 10-32 Nuts with Lockwashers
WARNING: DO NOT USE NON-SUPPRESSOR SPARK PLUG
WIRES WITH THE HYFIRE® VI IGNITION CONTROL.
KEEP ALL IGNITION SYSTEM WIRES AS FAR FROM SPARK PLUG WIRES AS POSSIBLE.
CONTENTS
General Information ............................................................................... 2 Early Model GM HEI Systems (non-computer type,
Ignition Ballast Resistor/Loom Resistance Wire............................ 2
without module)..................................................................... 6, 8
Standard Ignition Bypass (Bypass Connector).............................. 2 Mopar/Chrysler Corp. Electronic Systems
Ignition Coils .................................................................................... 2
(non-computer type, without module) ................................. 6, 9
Fuel Injection .................................................................................... 2
Spark Plug Wires.............................................................................. 2
Spark Plug Gaps .............................................................................. 2
Electric Welding ............................................................................... 2
External RPM Limiters
Mallory PRO TACH® I, IV and VI ...................................................... 2
Wiring Method Without Adapters.......................................................... 7
Breaker Point Systems ................................................................ 7, 9
Mallory Electronic Ignition, UNILITE® Distributors,
Magnetic Breakerless Distributors or Electronic
Advance Distributors (3-wire/red, brown, green) ............. 7, 10
For OEM Electronic Systems with modules/ampliï¬ers
Mounting Procedure .............................................................................. 2
(Chrysler, Ford, and import) ............................................... 7, 10
Mounting to a Flat Surface Without Brackets ................................ 2 Magnetic Pickup Trigger Pulses (magnetic
Mounting to a Flat or Uneven Surface Using Brackets................ 2 pickup distributors or crank trigger ignition) ......................... 7, 10
Mounting to a Flat Surface with Shock Mounts............................ 2
Top Panel Operation and Features .................................................... 11
Wiring Procedure ................................................................................... 3 RPM Limiter Operation â HYFIRE® VI Ignition System
Wiring Method using Adapters and Harnesses.............................. 3 (PN 685 only).................................................................................. 11
GM HEI Systems/coil-in-cap with OEM module)..................3-4
Late Model GM HEI/EST Systems (external coil).................3-5
Ford TFI Systems .........................................................................3-4
Ford DuraSpark Systems (non-computer type,
Optional Ignition Accessories ............................................................. 11
Bypass Connector............................................................................... 12
Mounting Template.............................................................................. 12
without module)......................................................................5-6
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