low voltage at head light

[franks]

I have a 1990 525i and the low beam light stoped working on the right side. I checked the voltage and it is only around 9 volts not 12 volts like it should be. Do I have to get a new light control module or is there a relay causing this?

[Ross]

more likely just corrosion in the connector

[franks]

more likely just corrosion in the connector

Which connector? I am getting the 9 volts at the builb and the fuse.

[Ross]

That changes things. Fuses 10 & 11 are fed from the LKM The light control module is a common failure on these cars and lots is covered here on it.
EDIT ///Sniper 535 is selling an LKM on the cheap.

[bmwrp8]

I have a 1990 525i and the low beam light stoped working on the right side. I checked the voltage and it is only around 9 volts not 12 volts like it should be. Do I have to get a new light control module or is there a relay causing this?

try to solder the LKM if that doesn't work just buy a 2nd hand one...its cheap