I have a 2004 Mercury 90hp that wont crank. Last week it was cranking fine no issue, sat for a week and now when I turn the key nothing. I do get lights on the dash. I checked and clean batteries and battery cables, I checked all fuses including engine compartment. I checked for power and ground to the switch 12.8v. I check the big red wire at the relay, got 12.8v. The switch is about 3 to 4 year old. I have no power to the S terminal of the relay. I'm lost, it's like the switch is not sending signal to the motor. The motor is in neutral. Any idea's would be appreciated.