Good evening all, I have a 2008 Z4 3.0si E86 coupe, I've owned it now for 5 years and loved every drive.
Recently though I've had reoccurring lighting problems. The car was bought with aftermarket SONAR SK3301 light units fitted, (LED angel eyes) standard side, H4 main and full beam and indicator bulbs.
The first issue was the self leveling function, it went through the sweep when the lights were first turned on but they rest pointing to floor. and on side lights only ??? you can hear the motors 'hunting' slightly for a minute or so?.
2nd issue was indicator either rapid flashing or static ON.
3rd issue is N/S dipped beam turning off and flickering occasionally, I investigated this weekend to find the N/S connectors damp and heavily corroded, both the 4pin self levelling connector (salvageable?) and the main light unit connector, (this is beyond repair)....which explains my issues I guess ?.
I've had to hard wire the unit now, but run into further issues, I'm sure I've paired the wires up correctly as everything worked when testing the unit, but the resistor mounted to the underside of the light unit got incredibly hot (smoking) so panicking, I cut the earth wire to it. this immediately stopped the heat but the indicator now stays permanently lit? what I'd like to know please is what bulb/bulbs does the resistor regulate ? ie have I cocked the wiring up? I'm 99% it's correct but really need a relevant wiring diagram to confirm my confidence/1% doubt !.
Ideally I'd want the BMW/SONAR connections diagram, at worse the original Z4 lighting diagram?.
Could anyone help please, I'd appreciate any info, suggestions, direction, I've been a member on here for 4 years or more but not posted in a very long time as the car has been impeccable
.
Thanks for anything ?
Kev.
Recently though I've had reoccurring lighting problems. The car was bought with aftermarket SONAR SK3301 light units fitted, (LED angel eyes) standard side, H4 main and full beam and indicator bulbs.
The first issue was the self leveling function, it went through the sweep when the lights were first turned on but they rest pointing to floor. and on side lights only ??? you can hear the motors 'hunting' slightly for a minute or so?.
2nd issue was indicator either rapid flashing or static ON.
3rd issue is N/S dipped beam turning off and flickering occasionally, I investigated this weekend to find the N/S connectors damp and heavily corroded, both the 4pin self levelling connector (salvageable?) and the main light unit connector, (this is beyond repair)....which explains my issues I guess ?.
I've had to hard wire the unit now, but run into further issues, I'm sure I've paired the wires up correctly as everything worked when testing the unit, but the resistor mounted to the underside of the light unit got incredibly hot (smoking) so panicking, I cut the earth wire to it. this immediately stopped the heat but the indicator now stays permanently lit? what I'd like to know please is what bulb/bulbs does the resistor regulate ? ie have I cocked the wiring up? I'm 99% it's correct but really need a relevant wiring diagram to confirm my confidence/1% doubt !.
Ideally I'd want the BMW/SONAR connections diagram, at worse the original Z4 lighting diagram?.
Could anyone help please, I'd appreciate any info, suggestions, direction, I've been a member on here for 4 years or more but not posted in a very long time as the car has been impeccable
.Thanks for anything ?
Kev.
