"Interesting" electrical problem on ZR+ 2003

Hi All,

I seem to have an electrical fault with this car...

At the moment, I've not been able to start it.

When I bought the car, it would start, either with a bump or...

To start the car, it seems I have to turn on the headlights and front fogs. If it doesn't start under these conditions, apparently, locking the car with the fob, waiting a minute and unlocking it sometimes helps.

Now I am thinking that the power or earth to some component (ECU/Immobilliser/Ignition) is interrupted and putting the lights in circuit is allowing the current to go to the affected component(s) via a different path from usual.

Anybody have any ideas or recognize this fault ?

I have the full Tech manual for the car, including all the circuit diagrams and so on, so I hope I can bottom this out as I need to get the car running.

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"Interesting" electrical problem on ZR+ 2003