3W 12V COB LED with 12V Campervan system
Tom, your first photo shows a complete lighting circuit with a heatspreader printed board circuit and the COB LED and its boost converter/current regulator on it, while you second photo shows only a COB LED. No heatspreader board, no circuit. And the form factor doesn't even match so you cannot put this on the original board.

You cannot connect this second LED to your car. It will not work/blow up in an instant for two reasons:


Missing boost converter/current regulator - without this a COB LED won't even light up on 14V (board voltage is 14V in a car!), most reach their nominal current at more than 30V due to the series connection of the individual LEDs on the lattice.
Missing heat spreader and heatsink - you need this. Without a heatsink and spreader, the LED will heat up itself to destruction within a second.