2014 Scarab Impulse 195 HO Will not crank

[Marlow]

I've a 2014 Scarab Impulse 195 HO that I let sit for nearly 2 years. She ran fine when parked (Dry on a trailer).
Replaced Battery, No start. Key Was always difficult so I replaced the ignition in case that was the issue. Nothing.
So I went all out, New Relays, new starter solenoid. Still Nothing. Only Relay Clicks. The Starter does engage properly when the solenoid is jumped.
I have bypassed the "deadman switch" (that is just unplugging, but I did also try with a fuse linking just in case) I did also try the trick of slowly moving the throttle to see if it found neutral. That did nothing either, same with jumping the connector to bypass it.
I have tried swapping and flipping the relays also to no avail.
I don't remember if it is normal but when turning the key to "start" the dash goes dark/dead, I'm guessing that is normal to give full power to the starting process.
Any guidance would be greatly appreciated.
Thank You

 

[Neutron]

If your solenoid clicks when turning the key then it is getting the signal from the ignition. Check with a voltmeter what you have at the signal wire at the solenoid. Also check voltage at the hot all the time lead from the battery at the solenoid. Then check voltage on the other side when the solenoid clicks.
If it has 12 volts at all those places then its a ground issue
But if the solenoid is clicking with the key turned and it will crank when jumping the solenoid then it usually is a bad solenoid

Make sure all grounds are good and clean

 

[Luc Lafrenière]

Besides checking things thoroughly as mentioned, the dead dash doesn't sound correct. This implies something isn't wired correctly.

 

[FSH 210 Sport]

I've a 2014 Scarab Impulse 195 HO that I let sit for nearly 2 years. She ran fine when parked (Dry on a trailer).
Replaced Battery, No start. Key Was always difficult so I replaced the ignition in case that was the issue. Nothing.
So I went all out, New Relays, new starter solenoid. Still Nothing. Only Relay Clicks. The Starter does engage properly when the solenoid is jumped.
I have bypassed the "deadman switch" (that is just unplugging, but I did also try with a fuse linking just in case) I did also try the trick of slowly moving the throttle to see if it found neutral. That did nothing either, same with jumping the connector to bypass it.
I have tried swapping and flipping the relays also to no avail.
I don't remember if it is normal but when turning the key to "start" the dash goes dark/dead, I'm guessing that is normal to give full power to the starting process.
Any guidance would be greatly appreciated.
Thank You

When you say that the battery was replaced, does that mean you put a new battery in it?
The screen going black, aka turning off, sounds like the battery voltage craters when load is put on it, that’s typical of a battery with heavily sulphated plates. Check the battery voltage when the starter is engaged.