sounds likea fueling issue, try starting it after spraying rp7 or carbie cleaner into the throttle, if its starts again then dies as normal, then you can assume its fuel
so try a new fule filter first, prim the car with the fuel feed hose disconnected and flowing into a bucket or sumnthing, crank it with it all connected and confirm fuel returning to the tank
- in regards to teh alarm, only way you could bypass would be to completely remove it from the loom