02 TL another water leak question
 

I've tried searching but most post I came across was from a 3G TL... I suppose the chasis design is the same but I wanted to make sure I am not missing out on anything by asking the 2G forum..

Anyhow, I am getting a puddle of water under my backseat on both sides... based on what I've read, it could be from the rubber grommet which is used to seal the sensors going to the wheel well..
What is the specific fix for this? And could this be the only source of the leak?

Thanks!