$28.00
The Johnson/Evinrude Connector is a 5-socket electrical connector housing used on select OMC outboard wiring and ignition systems.
This connector is designed to hold five female socket terminals and is used in applications such as ignition wiring, charging-system connections, power pack circuits, and related engine harness connections.
Ideal for replacing a cracked, melted, corroded, damaged, or missing original connector housing during electrical-system repair or restoration.
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The Johnson/Evinrude Connector 512753 is a 5-socket electrical connector housing used at the power pack connection on select OMC outboard ignition systems.
It groups several ignition-system circuits into one plug so the charge-coil, trigger, and related wiring can connect directly to the power pack.
For stock Johnson/Evinrude engines, it provides an organized and serviceable connection within the ignition harness.
For SST-45 / Formula Light racing applications, the same 5-position housing can also be used to incorporate the engine shutdown circuit into the power-pack connector.
The connector plugs into the power pack. Depending on the engine configuration, it can carry:
The exact wire colors and cavity locations vary by model, so wiring should always be matched to the correct engine diagram or existing harness configuration.
The power pack is the electronic control unit for the ignition system.
It receives electrical input from the charge coil and trigger system, then controls when the ignition coils fire.
Because 512753 connector plug is part of the direct connection into the power pack, poor terminal contact at this plug can create ignition problems that may be mistaken for a failed power pack.
On a standard production Johnson/Evinrude outboard, the connector is used as part of the engine’s ignition wiring harness.
Its purpose is to keep multiple ignition circuits together in one connector, which helps with:
The connector housing itself is reusable only if it remains in good condition and securely retains the terminals.
On an SST45 / Formula Light engine, the 512753 connector plugs into the power pack just as it does on a stock OMC ignition system.
Four of the five connector positions are typically used for the:
At Liquid Revolutions, we use the fifth position for the power-pack kill/ground circuit.
This allows the power pack to be grounded through the raceboat’s safety shutdown system, including:
When the kill circuit grounds the power pack, ignition is disabled and the engine shuts off.
Using the fifth cavity this way keeps the ignition and shutdown wiring together in one connector, making the race-engine harness cleaner and easier to disconnect, inspect, and service.
Part number 512753 is the rubber connector housing.
The individual female electrical terminals installed inside the connector are separate components (sold seperatly).
When replacing the housing, inspect each terminal for:
A new connector housing will not correct a bad terminal.
A damaged or loose power-pack connector can cause:
If an ignition problem changes when the connector or wiring harness is moved, inspect the power-pack connector before replacing more expensive ignition components.
One common issue is terminal push back.
A terminal may appear properly installed but slide backward when the connector is plugged into the power pack.
This can prevent the terminal from making full contact with the power-pack pin.
After installing or transferring terminals, lightly pull each wire from the rear of the connector to confirm that the terminal is locked securely into place.
Replacement should be considered when:
Older OMC connectors are often exposed to decades of heat, vibration, moisture, and repeated servicing.
Before removing wires from the original connector:
On stock engines, follow the correct factory wiring diagram.
On SST-45 race engines, verify the charge-coil, trigger, and kill-circuit positions before applying power or starting the engine.
For SST-45 / Formula Light racing, reliable ignition connections are especially important because the engine is exposed to sustained high RPM, vibration, water, and frequent service.
At Liquid Revolutions, we use the fifth cavity in the 512753 connector for the power-pack kill/ground circuit while the other four positions handle the charge-coil and trigger wiring.
This keeps the power-pack wiring compact and organized while integrating the raceboat’s shutdown system into the same connector.
It also makes the connector an important troubleshooting point. Before replacing a power pack, charge coil, or trigger, inspect the connector and terminals for loose contacts, corrosion, heat damage, or terminal push-back.
For both the stock Johnson/Evinrude owner and the SST-45 racer, a properly assembled 512753 Power Pack Connector helps maintain a clean, reliable, and serviceable ignition system.
For SST-45 applications, confirm your harness layout before transferring terminals, especially if the fifth cavity is being used for the power-pack kill/ground circuit.
| Weight | 0.4 lbs |
|---|---|
| Dimensions | 1 × 2 × 1 in |
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