BMW 3-Series (E90 E92) Forum - View Single Post - DIY : 2007 E93 repair failed rear LED lightbar

UK_Nomad · 11-25-2017, 10:27 AM

Step 3 : identify which partcular LED(s) have failed. Options :
connect a 9 volt battery, short out each LED in turn, when you do the faulty one, the other 2 will light up (assuming only 1 has failed)
connect a 9 volt battery and measure the voltage across each LED, working ones show 2 volts, the failed ones show 6 volts.

11-25-2017, 10:27 AM	#4
UK_Nomad Private First Class 44 Rep 103 Posts Drives: 2007 E93 325i Cabriolet Join Date: Oct 2017 Location: South Northumberland UK iTrader: (0)	Step 3 : identify which partcular LED(s) have failed. Options : connect a 9 volt battery, short out each LED in turn, when you do the faulty one, the other 2 will light up (assuming only 1 has failed) connect a 9 volt battery and measure the voltage across each LED, working ones show 2 volts, the failed ones show 6 volts. Attached Images __________________ Ex BMW owner (2007 E93 325i, E36 325i & 328i from the 90's)
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