Big Block Chevy Mercruiser Style Engine Harness For MSD Ignition

These wiring harnesses were designed for use in custom engine installations that use an MSD Ignition Box. Don't suffer from a tangled spaghetti-wire nightmare. Both the custom and universal harnesses are engineered of the highest quality wire, connections, terminals, and components. Harness is 6 ft. long.

Note: Uses 14 AWG wire

• Ultimate in a clean and functional installation.
• Designed for MSD 6M2L or New 6M3L Ignition Boxes
• Polished Billet Aluminum.
• Will mount on a Big Block Chevy Cylinder Head, port or starboard.
• Will also mount round coils or MSD Blaster SS coils.

• Ultimate in a clean and functional installation.
• Designed to sandwich between an MSD 6M2L, 6M3L, Max Volt MV-D6 or a Daytona Sensors Old Style CD-1 Control Box. New CD-1 Boxes have a different pattern.
• Satin Finished Stainless Steel.
• Will mount on a Big Block Chevy, Small Block Chevy, 455 Olds, and 460 Ford Cylinder Head.

"Deluxe" MSD / Hardin Digital Ignition Package - Chevy V8

This "Deluxe" ignition package is the most complete offering of its kind If you are looking for the very best and most complete system this is it.  Each kit consists of the following components:

• (1) Hardin Marine 121-3560 Billet Marine Distributor
• (1) MSD 6564 6-M32L Series Multi-Spark Ignition Control Box with Built-In Rev Limiter
• (1) Hardin 2222 High Vibration Coil
• (1) Hardin Marine 8 MM Spark Plug Wire Set (LIMITED TIME FREE ADD-ON VALUE!)
• (1) Hardin Marine 620-11219 Stainless Steel Head Mount Bracket (LIMITED TIME FREE ADD-ON VALUE!)

Over our 40 years of engine development we have worked with some of the worlds most innovative and technologically advanced company's From those relationships came many new alliances and product advancements such as the introduction of the "multiple spark discharge" ignition systems from Autotronics Controls. This advanced technology has produced an ignition system powerful enough to prevent spark plug fouling, faster RPM advancement, quicker acceleration, and increased peak horsepower, while greatly improving the overall drivability of any boat yet tough enough to withstand the harshest marine environments. These systems are 100% certified for marine use to comply with all USCG requirements. We are proud to be able to off to you the finest marine ignition system available today.

"Deluxe" MSD / Hardin Ignition Package - Chevy V8

This "Deluxe" ignition package is the most complete offering of its kind If you are looking for the very best and most complete system this is it Each kit consists of the following components:

• (1) Hardin Marine 620-8560 Billet Marine Distributor
• (1) MSD 6560 6-M2L Series Multi-Spark Ignition Control Box with Built-In Rev Limiter
• (1) Hardin 2222 High Vibration Coil
• (1) Hardin Marine 8 MM Spark Plug Wire Set
• (1) Hardin Marine 620-11220 stainless steel head mount bracket.

Over our 40 years of engine development we have worked with some of the worlds most innovative and technologically advanced company's From those relationships came many new alliances and product advancements such as the introduction of the "multiple spark discharge" ignition systems from Autotronics Controls. This advanced technology has produced an ignition system powerful enough to prevent spark plug fouling, faster RPM advancement, quicker acceleration, and increased peak horsepower, while greatly improving the overall drivability of any boat yet tough enough to withstand the harshest marine environments. These systems are 100% certified for marine use to comply with all USCG requirements. We are proud to be able to off to you the finest marine ignition system available today.

• Same high output assem­bly that is currently found in all MSD Distributor. 
• Supplied with the two pin connector installed

MSD / Hardin Distributor Advance Spring Kit

The MSD / Hardin Distributor Advance Kit contains an assortment of springs, advance limit bushings, and a mechanical advance lockout screw.

MSD 6M-2L Marine Ignition with Rev Limiter

Highlights:
• Designed for performance marine applications
• Weathertight connector with multi-ribbed seal for reliable connection unaffected by water, oil, gas, and most other boating chemicals
• Completely potted circuitry with polyurethane for weather-proof protection
• Triggered by magnetic pickup (distributor or crank trigger), breaker points distributor, or amplifier
• Tested and certified to meet or exceed USCG standards

The MSD 6M-2L has the same mounting footprint as the original unit, so it will easily fit into existing brackets. The proven Soft-Touch rev limiting action is set using our marine rpm modules so you’ll be able to set a rev limit exactly where your engine needs it.

The 6M-2L is built to deal with constant high rpm and load conditions unique to marine applications. To protect the 6M-2L’s electrical circuitry from direct water contact, the entire unit is potted with red polyurethane. This material prevents the electrical components from coming into contact with water or other chemicals that could cause damage. Weathertight connectors with multi-ribbed seals are unaffected by water, oil, gasoline and most other chemicals associated with boats.

The 6M-2L can be triggered by either a magnetic pickup (distributor or crank trigger), amplifier or by a breaker point distributor. The cable harness has the proper connector so you can plug the 6M-2L directly into one of MSD’s Pro-Billet Marine Distributors.

Operating Specifications:
• Spark Energy: 105-115 mJ per spark
• Primary Voltage: 460-480 volts
• Secondary Voltage: 45,000 volts (tested with Blaster Coil)
• Spark Series Duration: 20° crankshaft rotation
• RPM Range: 15,000 RPM with 14.4 volts
• Voltage Required: 12-18 volts (negative ground)
• Current Draw: 1 amp per 1000 RPM
• Size: 8" Length x 3.5" Width x 2.25" Height

MSD 6M-3L Marine Ignition with Digital Rev Limiter

Highlights:
• Large, easy to read LED display
• Shift interrupt feature eases shifting
• MSD’s smoothest rev limiter yet, protecting parts and saving your engine
• Records highest RPM the engine turned for last 20 minutes of run time
• Easy setup of features with three rotary dials on the face of the unit
• Built-in Start Retard adjustable in 0⁰, 10⁰ or 20⁰ increments for quick, easy starts and extend starter life
• LED display shows rev limit, highest RMP turned, cylinder select, start retard, battery voltage and can be set to tach mode
• Full delivery of spark energy and easy starting down to 6 volts battery supply
• Highly efficient, low current draw for extended battery life
• Fully potted housing to withstand demanding marine conditions
• Sealed connector for clean wiring and trouble-free operation
• Works on 4, 6 and 8 cylinder engines
• Reverse polarity and overheat protection provide ultimate reliability
• Can be triggered by magnetic pickup, amplifier, and points inputs

MSD has raised the bar and added an all-new UL listed marine ignition box to their lineup. The 6M-3L is a fully sealed unit with a single wiring connector makeing installation neat and easy.

Three rotary dials and an LED display simplfy setting the cylinder select, start retard and rev limiter. Plug-in rev limiter chips and hard to read dials are a thing of the past. For diagnostic purposes, the LED display can also be set to a live tach mode on V8’s and even display battery voltage with the turn of a knob.

The 6M-3L is a capacitive discharge ignition that multi-sparks from idle to 3,000 RPM providing a clean idle and quick throttle response. Above 3,000, capacitive discharge sparks will run clean through 12,000 RPM . Boasting more features and higher spark energy than its predecessor, the 6M-3L is the performance upgrade your boat needs!

MSD 8.5 MM Spark Plug Wire Set Big Block Chevy with Socket Distributor Cap

• Only 40-50 ohms resistance per foot of wire (lowest of any helically-wound wire)
• MSD Ignition Copper alloy conductors result in less spark energy loss so more reaches spark plugs
• Over 40 feet of conductor per foot of wire
• Conductors are wrapped around ferro-magnetic center cores, which effectively suppresses electro magnetic interference
• Outer sleeves consist of silicone and synthetic material for a strong resistance to heat, abrasion, and tearing
• Made in the USA
• 90 degree ends

MSD 8.5 MM 8.5 MM Super Conductor Spark Plug Wire Set, GM LS1, 1997-Present

Features:
• Made in the USA
• Custom fit for make and model listed.
• Wires are precut to exact specifications
• Bolt-on performance

Engineered from the inside out, the 8.5 offers everything you have ever wanted in a wire; incredibly low resistance without electronic interference! In a single 8 inch length of Super Conductor Wire there is only 40 - 50 ohms of resistance! That is the lowest resistance of any helically wound wire. To accomplish this, we use a copper alloy conductor due to it's great voltage carrying capabilities. The low resistance results in less loss in spark energy so more reaches the spark plug. The conductor is wound extremely tight around a special center core. So tight in fact, that there is over 40 feet of conductor wrapped into a single foot of plug wire. This winding procedure, combined with a ferro-magnetic impregnated center core, produces an extremely effective Electro Magnetic Interference (EMI) "choke". This choke, or suppression capability, keeps the EMI inside the wire where it cannot interfere with other electronics on your vehicle. The outer sleeve that surrounds the conductor assembly is just as impressive. A proprietary blend of silicone and synthetic material produce a sleeve that is highly resistant to high heat as well as abrasion and tears. The MSD's 8.5mm spark plug terminals feature Dual Crimp terminals. As the name implies, the terminals feature two crimps; one for the sleeve of the wire and another separate crimp to grasp the conductor. The MSD's 8.5mm spark plug terminals feature Dual Crimp terminals. As the name implies, the terminals feature two crimps; one for the sleeve of the wire and another separate crimp to grasp the conductor.