Today i got my hands on a motor wiring with the correct plug for the oil sensor!
Can i just swap the wiring harness with this old one so that i can get the sensor to work or should i go on with taking the sensors wires on mine in case i have issues with the old wiring on other parts of my motor?

As i can see the plug for the oil level sensor has 3 wires, blue/grey - black/white - red/yellow

Blue/grey goes straight in the motors big plug
Black/white splits into 3 wires going to 3 other plugs (MAP,Coolant temp sensor and one more)
Red/yellow splits into more than 3 as i have noticed!

Seems too complicated for me!
Waiting to hear for your suggestions!

New motor wiring harness would cost about 200E here from a friend of mine and if it is ok to go on with that i would really prefer it against "playing" with a mix of them!