Reverse polarity on 07' 60hp Merc outboard

[07' Alumaweld]

I abscent mindedly reverse connected my battery a couple weeks ago. Blew the 20a fuse at the front of the engine and a 25a fuse at the regulator. The main 50a fuse at the battery did not blow. I've replaced the diode along with the regulator. Still nothing when I turn the key. No engine alarm tone either. Could it be the solenoid or ignition? Hopefully not the ECU! I'm at a loss. Any help is appreciated

 

[boscoe]

What is the engine serial number?

 

[07' Alumaweld]

1C041913.
I have since tested for power from the ignition at the solenoid. No voltage. Next step is the ignition to make sure I'm getting voltage in the on & start position. Does this sound correct?

 

[boscoe]

You are going to need a wiring diagram to trace out the circuit from the battery to the motor and from the motor to the key switch and from the key switch back to the motor.