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Most current 12v remote option for 2021 Model 3?

I've been hunting through all of the threads regarding the 12v remote turn-on location and it seems to change in every post and thread I find -- Can anyone quickly tell me a remote turn-on wire i can tap into for the 2021 Model 3? is the "midle-sized" of the 3 red wires in the passenger front kick panel area still a good option? I'm trying to hook up my audiocontrol lc2i, as the auto turn-on from the subwoofer + and - doesn't actually turn off the lc2i and amp until about 30 minutes after the car is asleep.... Thanks!
 
just an update here for anyone searching, i worked on this this past weekend, and the small red wire UNDERNEATH a majority of the bundle of wires in the passenger front kick panel area DOES work -- specifically when someone is sitting in the driver seat and puts their foot on the brake to "turn on" the car. it will stop receiving power if you get out of the driver's seat (say to get something out of the backseat or trunk, etc.) but that will work for me.

TLDR -- small red wire at the back/underneath the bundle of wires in the plastic "channel" in the passenger front kick panel area will work for remote turn-on for an amp or anything else that needs remote turn-on when there is weight in the driver seat and the brake pedal is pushed.
 

Timbo2

Member
Jun 8, 2019
228
177
USA
just an update here for anyone searching, i worked on this this past weekend, and the small red wire UNDERNEATH a majority of the bundle of wires in the passenger front kick panel area DOES work -- specifically when someone is sitting in the driver seat and puts their foot on the brake to "turn on" the car. it will stop receiving power if you get out of the driver's seat (say to get something out of the backseat or trunk, etc.) but that will work for me.

TLDR -- small red wire at the back/underneath the bundle of wires in the plastic "channel" in the passenger front kick panel area will work for remote turn-on for an amp or anything else that needs remote turn-on when there is weight in the driver seat and the brake pedal is pushed.

My understanding is the vehicle is quite sensitive to current draw. So folks are using that wire for "sense" only - i.e. low current draw.

I'm not aware that anyone is trying to power anything significant from that. For example it powers a relay with the actual device power coming from either the trailer wiring circuit or the 12V plug in the center console.
 

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