The Tesla Cybertruck started deliveries last year.JULIEN DE ROSA/AFP via Getty ImagesSome Cybertruck owners seem to be getting their hands on the light bar accessory — but there's a catch.Tesla employees are not legally allowed to install the required electronics, the company says.One YouTuber said he had to finish installing the light bar on his Cybertruck himself.Tesla Cybertruck owners will have to do some DIY if they want to equip their vehicles with one of its most eye-catching accessories.The Foundation Series "Cyberbeast" version of Tesla's futuristic electric truck comes with an off-road light bar — an LED light fitting that sits above the front windshield.The accessory, which Tesla says can illuminate up to 525 yards, did not ship with the Cybertruck when it launched last year and is set to be delivered in 2025.Some owners appear to have got their hands on the product already — but may have to set it up themselves.In a video posted on TikTok, YouTuber Marques Brownlee said that after Tesla emailed him to say it was ready to install the light bar on his Cybertruck, the company returned the pickup with a strip of black tape over the newly attached roof lamp.Brownlee said the light bar was also not connected to the internal harness that allows it to get power.