actibus wrote:Im installing your original harness with an switch from Aliexpress and a relay, as described earlier, but is it possible to get 12v and GND from the harness, so I don't have to wire it elsewhere..?
It is possible, but I would not recommend it unless your really know what you are doing. And you absolutely must
seperate the circiut connected to power from the climate control harness cables. I have never seen a automobile switch with lights that seperates 12+ from output. So you either need a relay or optocupler.
Another issue is that some of the +ve cables to the harness is live even if the car is OFF so that tapping into these may cause drain.
The easiest access to 12v is from the 12v outlet. It is really easy and simple. Or you could just wait until I am launching my switch kit...