starting on 1995 Jaguar XJR

My jaguar is 1995 XJR sovereign, initially it was starting but when driving it will just go off and you will have to wait for some minutes before it can start again. Later it didn't start again and I called a technician to check it and I was told it is the crank shaft sensor.I bought a new sensor and replaced the old one there but to my suRprise it is not even making any sound again when u try to start it. Right now that is the problem, it just won't start. Kindly assist with whatever you think the problem might be, thanks.

Asked by for the 1995 Jaguar XJR
It sounds like your Battery is now dead, If there is NO sound, then that is what I would check > If the lights work, the battery can still be too weak to crank the engine by the way.
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look at osf next to the washer bottle,there is the pi conecror [white multi plug]seperate this look for corrosion if none conect back up make sure it snaps in to the lock if not secure with tie strap,also try starter relay its on the nsf[4 relays in a row its the first one]