That is a Xenon gas filled conventional globe. Suposed to burn brighter. Stick with standard stuff or the CLM will be confused above words. You may have bad earths so the buld is turning on via other fillaments in the circuit(s). Chech ALL earths, connections and globe holders B 4 you spend on parts.
Good - Fast - Cheap: Pick any two.
E23 735i; E30 318i; E32 735iL; E38 735iL; R50 Cooper; R55 Cooper Clubman.
E21 318i; E32 735iL; E34 535i; E38 730iL; E53 4.4i