Where is the ignition key on a MerCruiser?
The Mercruiser Key Switch has three terminals on the back. One is a large Red wire which is the main positive feed. Another wire will be Purple which is “ignition”. This feeds the gauges and keeps the engine running. The third lead is Yellow/Red and it is what activates the starter slave solenoid to crank the engine.
What to do if your MerCruiser won’t crank?
SAFETY TIP:Make sure the shifter is in nuetral and the propellar is removed from the drive. Also make sure that everyone is clear of the engines moving parts. If you use a little jumper wire and jump acrossthe large Red wire and the Yellow/Red wire the engine should crank.
Where is the slave solenoid on a MerCruiser?
The Slave Solenoid is a small bracket mounted solenoid usually located near the Breaker or Main Harness Plug. This is the solenoid that everybody knows to jump if the starter won’t crank the engine. Careful! It will spark like crazy if you jump the two large terminals.
What causes a MerCruiser key switch to go bad?
Key Switches go bad. It’s a moving part and water can get down into the switch. The Mercruiser Key Switch has three terminals on the back. One is a large Red wire which is the main positive feed. Another wire will be Purple which is “ignition”.
The Mercruiser Key Switch has three terminals on the back. One is a large Red wire which is the main positive feed. Another wire will be Purple which is “ignition”. This feeds the gauges and keeps the engine running. The third lead is Yellow/Red and it is what activates the starter slave solenoid to crank the engine.
SAFETY TIP:Make sure the shifter is in nuetral and the propellar is removed from the drive. Also make sure that everyone is clear of the engines moving parts. If you use a little jumper wire and jump acrossthe large Red wire and the Yellow/Red wire the engine should crank.
Key Switches go bad. It’s a moving part and water can get down into the switch. The Mercruiser Key Switch has three terminals on the back. One is a large Red wire which is the main positive feed. Another wire will be Purple which is “ignition”.
The Slave Solenoid is a small bracket mounted solenoid usually located near the Breaker or Main Harness Plug. This is the solenoid that everybody knows to jump if the starter won’t crank the engine. Careful! It will spark like crazy if you jump the two large terminals.