Under dashboard mounted ColorBar equalaizer.
This accessory became widespread in the culture of lowriders and custom in the late 1960s - early 1970s and was a psychedelic necessity for the lowrider interior of those times.
It is very difficult to say about the history of the invention of this accessory, here it is rather a story about blinking, so stylish In many ways, in the history of lowriding throughout its turbulent and prosperous life, such seemingly uncomplicated decisions have always been the most important and integral part of Lowrider Culture. A lot of the aesthetic solutions came from just for fun, and this is, in my opinion, one of the coolest things in this story. There is nothing better than watching the multi-colored blinking of light bulbs that pass through the prism of distorted glass :3