Nissan Micra K11 issue

[Ellisk112007]

Hi
Could do with some advice please.
Nissan Micra K11 1st facelift. Clutch has just been replaced, but since then the ignition will only come on if the car is revved really hard.
Had new battery, new alternator, ignition switch, wires all checked.
Anyone have any idea on what else it could be?
It’s my 18 year old Sons car and he’s at a loss at what could be causing it now .
Thanks

[Super Sonic]

You may need to clarify this.
The engine will not start unless the ignition is on.
The engine will not rev if it is not running.

[Ellisk112007]

Ok, so the engine runs, what I meant was, unless you rev the car the lights and the interior lights etc don’t work. They only stay on if he revs the car a lot, as soon as he stops doing that they all die

[trickywoo]

Check all the electrical grounds. One or more could have been detached or damaged in the process of changing the clutch.