bells on emperor's carriage
鑾 refers specifically to the bells attached to an emperor's carriage, combining the ideas of metalwork and imperial regalia.
鑾 combines 金 (metal) with the phonetic 䜌, indicating metal bells. The character is historically associated with imperial carriage bells.
The top part 䜌 looks like a tangle of threads, and the bottom 金 is metal. Imagine tangled metal threads forming a cluster of bells hanging from an emperor's carriage.
For ラン, picture a long line of imperial carriages running down a road, their bells ringing: run -> ラン.