"I mesure that: power side 12V, gnd side 0.7V or 12 V when break is press.
Could you help me with that."
So I'm looking for the wire colors wherever you made this measurement.
I'm presuming it's at the trunk lamp, but if it's elsewhere, tell me where
it is. What's the wire color of the wire with the 12V, and what's the wire
color of the wire with the voltage that depends on brake application? Per
the shop manual, one wire going to the trunk lamp is orange/black and the
other is green/orange.