Afn keeps running without key

Hi guys
I need urgent help I'm loosing my mind
I bought a b4 passat shell and a complete car passat b4 tdi afn
I swaped the engine and full arness.
The car starts and runs perfectly but it hás a big problem.
When i turn the key off it keeps running .
Allready replaced the shutoff valve and the ignition switch.
When i turn the key to on position it Opens the valve but when I turn it off the valve keeps Powered with 12v
Someone hás the scheme for the ignition?
Help me please

It sounds like you might have a backfeed from the alternator. I had this issue on my audi 90 AHU swap. I used a diode on the exciter wire to the alternator to only allow flow into the alternator but not back to the harness. Worked for me. You could try disconnecting your alternator exciter wire and see if it shuts off with the key.

Solved

Thak you for the reply.
It was two cables with equal conector wrongly conected.

Thanks