5-Series (E12,E28, E34, E39, E60)Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)
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okay so i just got a 1997 bmw 540i and i have no idea what size my low beams are. I want to get a hid kit and i did some research and i think they are h7(someone correct me if im wrong lol)
and is there anything i need to know before installing hid's? the kit that im getting is plug and play so i should be alright...right?lol
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hey im new and i need hid bulb help please :) 
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