I recently installed LED headlights in my F3Ltd. WOW, what a difference. I looked at numerous H4 LED bulbs before selecting the GENSSI LED headlight kit, part no. G7-ELT-H4 (see pic). Most LED H4 9003 bulbs I looked at do not include the circled components (see pic). Most just have the cable coming out of the rear of the bulb assembly with the 3-prong connector. I've seen descriptions of these components ranging from "thermal management heat sinks" to "external voltage regulators" to "CANbus LED drivers". Does anyone know specifically what these components are and what their function is?