I hooked up my trailer to the back of my 3S and while I was going down the road at night, the gauge lights went to "day mode" and the radio and climate lights went out. I also found out all my tail and front parking lights are also out. Both taillight fuses are OK. Map and trunk lights still work. It's like the car cannot sense that the headlights are on. Is there a relay or fuse that controls this?
please help!
please help!
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