An ignition switch, starter switch or start switch is a switch in the control system of a motor vehicle that activates the main electrical systems for the vehicle. If you have to wiggle the key hard or the boat won\'t start when the key is turned, it means you need to replace a new engine starter ignition key switch for your boat.

Specifications:
Material: Brass + Plastic
Color: Black
Replacing OE Number for Reference: 87-17009A2 87-17009A5 MP41070-2 MP41070-1 MP41070
Package List: 1 * Ignition Key Switch + 2 * Keys
Size: 57 * 37mm / 2.3 * 1.5in
Package Weight: 3.99 Ounces
Switch Positions: Off - Run - Start
Fitment: For Mercury Mariner Outboard Remote Control Box

Package included:
1 * Ignition key switch
2 * Key

How to wire this boat key switch?
Black-Ground
Yellow/Red-Start Solenoid
Red-12V+Fused Supply
Yellow/Black-Choke
Black/Yellow-Magneto
Perple-Lgnition

How to install：
Take the solenoid wire and connect it to the portion of the boat ignition switch that says "Start". This will complete all of the connections that need to be made to install your new ignition switch. Once you have everything connected on your ignition switch, slide the key into the key slot and turn it to "On".

Note:
This ignition key switch is not a genuine Mercury part, it's a direct replacement and meets OEM standards.
It is advisable to check the existing Part Number before placing an order.