DIY Trailer Harness for Model Y
2021-11-8u2002·u2002you have to splice into the rear 12v outlet harness. It wasnt at all hard to do that and the 12v socket is replaceable if you wanted to 'undo' that splice, ever. The rest of that harness plugs into the tail lights so its all very simple. But this one you posted is even easier. Its really not an issue to have the rear warning on the screen while ...
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