Let's back up a minute

https://youtu.be/bis_4MT5SSo

Back-up beepers: Obnoxious, but getting better - and spreading!

YouTube
@TechConnectify uhm... Wouldn't splicing the reverse lamp on modern cars somehow mess up with the sensed load, leading to the ECU believing a lamp is either burnt while still functioning (thus triggering an alert on the dashboard), and/or vice versa?