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Megane Rear Light Fault
I have been having problems with my O/S rear indicator for some time. When braking while indicating the brake light and indicator flash alternately.
This is a classic symptom of a poor earth on the lamp unit. The fault seems to be in the multi plug but the connectors are so small I wasn't able to improve the connection permanently.
I have just made a semi permanent cure using a piece of insulated cable with a small crocodile clip on each end.
Remove the lamp cover and remove the bulb holder by releasing the clip at each side.
Looking at the bulb holder from the bulb side you will see that the earth path is the strip of metal running around the outside of the indicator and across the top to the reverse lamp bulb. In the centre the strip is quite thin. I attached one of the crocodile clips on this and the other th the earth point on the body below the lamp unit. The connection in the multi plug is now bypassed and the problem is solved.
This repair may cure other types of strange behaviour in the rear lamps.
It would be better the attach the wire more permanently but I haven't yet worked this out. I don't think solder would take on the metal used on the bulb holder circuit.
I hope this is helpful.
Currently in grum's garage:
1999 Megane 1.6 Auto Hatchback