First the accesorry panels get wet when you wash down boat causing the internal relays to short . They are no longer made and replaced with 
DECC   Send PANEL W/O KEY SWITCH + DECC and 2 button wth orange wire Rick Cohn 10200 Newington drive Orlando, Fl 32836           575.00    35.00 
The starting of the engine is independent of any switch pad. There are steps to follow 
1. turn key on does the gauges buzz and go to zero? if no then it is the lanyard. if yes go to 2 
2. Turn key to start does the engine crank? if no not in neutral 
3. Key ON, There is a FP button engine hold down for 2 minutes and inspect the Fuel rail damper screw if it stays up about 1/8 inch. If it does not then the issue is fuel related. put vise grips on the black rubber line going back to tank. try step 3. again if it runs bad fuel pump or pumps. 
4. If the engine runs at 1200 rpm there will be codes to determine what is wrong. 
984318020   Tool,Engine, scan tool Rental 7 days           200.00    30.00    
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984318020 Deposit   Scan Tool deposit for engine           1000.00     
Capt Rick