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Hi Guys, My car is at the painter’s and since most of the external parts have been taken off for painting, I wanted make use of the opportunity and clean the fog lamps. One of the fog lamps in my car was badly discoloured due to water leaking into the assembly causing one of the screws to corrode and spread the corroded metal particles everywhere (see the images below and you’ll see what I mean). So anyway, I thought of writing a DIY for whoever might be interested in doing a full cleanup of their headlights or fog lights. I found a couple of DIYs on the forum about headlamp restoration, but thought of posting this since this is a full cleanup. Here goes… What you need: A heat gun (optional) | Silicone sealant | Sandpaper 1200 grit and 2000 grit | 3M rubbing compound (or Brasso) | Clear coat spray can (optional) | Masking Tape | A bowl of water | An old toothbrush | A little car wash | Tools to take the fog light assembly apart, a set of spanners and screwdrivers would do. 1. Take the fog lamp assembly out of your vehicle. My fog lamp assembly looked like this: See what I mean about the discolouration? Remove the mounting brackets and set them aside with the screws and clips that hold the lens and reflector in place. 2. Use the heat gun on the edge of the lens to heat the sealant and carefully pry out the lens using a screwdriver. Follow safety precautions specified on the instruction manual of your heat gun to avoid risk of injury. Once the sealant is heated up, it will start to melt partially and the lens will come out easily. There is another method to remove the lens and that is to pre heat an oven to about 200 degrees Fahrenheit and put the lens in there for about 3 – 5 mins max. Leaving the light in the oven for a longer time will cause the entire assembly to melt, so you might want to be careful with this method. 3. To avoid the sealant sticking to your hand and every surface it touches, cover the sealant using masking tape. I initially thought that the masking tape wouldn’t come off due to the sealant sticking to the tape itself, but I had no problem, it came off fine. 4. Using water and the sand paper cut away the dirt and discolouration on the lens. Tear a small part of the sand paper and dip it in water and start sanding evenly across the front of the lens. I had some paint marks on my lens so I had to use the 1500 grit sand paper on those areas while I was able to sand the other areas with 2000 grit. Make sure there is enough water on the lens while sanding. The lens will become a bit foggy after sanding, don’t worry about that as we’re going to take care of it in the next step. I had to sand the inside of the lens as well. 5. Apply 3M rubbing compound (or Brasso) on the lens and polish it until the lens is nice and transparent. BEFORE AFTER Continued...