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Outboard Spares Colour Codes Mercury Mariner Outboard

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COLOUR CODES FOR MERCURY MARINER OUTBOARD 8PIN WIRING LOOMS

Black with Yellow Stripe Wire - Engine Stop/Kill.

When this wire is earthed, it stops the engine. There may be more than one switch on tiller control models that connects to this wire.
For Example: The Engine Safety Kill Switch has one wire attached to earth and another attached to the Black/Yellow Stripe Wire, Should you fall from the boat taking your Safety Lanyard with you, when the lanyard disconnects it either releases a switch to make contact or pulls a switch down to make contact. When this switch makes contact it connects this Black/Yellow Stripe wire to earth which stops the engine.

 

Yellow with Red Stripe Wire - Engine Start

When this wire is supplied with a positive charge it triggers the Starter Solenoid which in turn supplys 12 Volts to the Starter Motor to turn the engine over.

 

Yellow with Black Stripe  Wire - Engine Choke/Prime

When this wire is supplied with a positive charge it opens the valve on the Choke Enrichener or Creates a Electro-Magnetic field and engages the Mechanical choke mechanism.

 

TAN Wire (Occasionally Tan with a blue stripe) - Warning System

This wire is connected to the Warning Horn, The warning horn has a constant 12V Feed from the purple wire (Ignition Live) whilst the engine is turned on, if a Temperature Switch or the Oil Level Sender makes contact due to the engine overheating, oil too low or simply a faulty sender the horn will sound.

 

Purple Wire - Ignition Live

This wire is the Ignition Live, it supplies 12Volts with the Ignition Switch in the On Position, it supplys the warning horn and dashboard gauges.

 

Grey Wire - Tachometer Signal

This wire is the Sender (AC) For the Tachometer (Rev Counter)

 

Black Wire - Earth (Neutral)

This wire is Connected to the Engine Earth / Battery Negative.

 

Red with Purple Stripe Wire - 12V Positive

This wire is connected to the 12V Positive Supply from the Battery

 

Light Blue with White Stripe - TRIM UP Switch

This wire supplies positive to the Trim Relays when the Trim button is pressed up on the control box handle

 

Green with White Stripe - TRIM DOWN Switch

This wire supplies positive to the Trim Relays when the Trim button is pressed down on the control box handle

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