electric questions

[Teddy]

Hi, I have 2 questions.
First, when starting the car the headlights and rear lights goes automatic burn without touching the LSM.
But not the instrumental lights. That comes when I turn the switch manual.
I suppose the former owner have made this so. Is it that this is maybe done with a T4? And can it be ondone? Or is that not possible and have a garage made an extra wire for this.
Second, I have a digital temperatuurgauge. I need the canbus connection from the gauge connecting to the K-bus from the car. So I have digged up a main loom behind the radio and a wire white/red with yellow dots from that loom but get no signal. the gauge shows only C. Tried to different same colored wires but still no results.Is it that there is a different between I-bus and K-bus and have I taken the wrong wire?
The normal temperatuurdisplay in the instrumentpanel works oke.
What options are left for me.
Waiting . . . . .
Gerard