leaky rear light
 

One of my rear lights (boot mounted one) leaks - it leaked before so i replaced the light unit, but it leaks as well, albeit not as bad. Every couple of months i need to take it off and empty it out then dry it etc etc. Bit of a pain.

i was thinking about drilling a couple of small holes in the bottom of the plastic out of sight so that any water getting in would just drain out again. Are there any reasons why this would be a bad idea?

I have tried to water proof the lamp unit as best as possible, siliconing up the rear cover, where the wires go in etc but I think its the tiny cracks in the light surface where the water is getting in, so short of replacing the lamp again im stuck with the leak for now.

The only other solution is to never open the boot lid so the water doesnt slosh back onto the electronics which makes the car kill the power to the light. This is of course impossible as I need to disconnect the battery at least twice a day to reset the blacked out mirrors!

Make sure your actual drain gutters are clear, I think there is one on the rear right arch (under) also use a long bristle fine brush and some general purpose cleaner and clean all the top corners of the rear bumper when you have opened the boot lid. If that makes sense. You don’t want any water build up as that’s the cause of ingress into lights.+++