The cover is a bit of a pain in the ass to do, it is only suspended around the edges so over time sags in the middle. The only thing I can think of doing it threading some fine wire through it or replacing it with a heatproof dynamat type material.
As for the front lights I don't think that anyone has successfully managed to remove the film polish the plastic yet. I know a guy who tried it with a Toyota Supra and made a hash of it and eventually had to buy two new lights. If the film is looking really bad then try removing it with a hairdryer and using some hood polish on the plastic surface but do not use anything abrasive or you will be in the market for a new set of lights!
Back ones are a pain on all of the b's, there is a seal around the back of the bul unit that it not too great at doing its job and lets water in. I would not go near an oven with plastic lights and would not dream of having them apart. I would suggest some absorbent cloth poked through the hole with a screwdriver to get the worst of it out and then try drying the rest with a hairdryer...........
HTH
As for the front lights I don't think that anyone has successfully managed to remove the film polish the plastic yet. I know a guy who tried it with a Toyota Supra and made a hash of it and eventually had to buy two new lights. If the film is looking really bad then try removing it with a hairdryer and using some hood polish on the plastic surface but do not use anything abrasive or you will be in the market for a new set of lights!
Back ones are a pain on all of the b's, there is a seal around the back of the bul unit that it not too great at doing its job and lets water in. I would not go near an oven with plastic lights and would not dream of having them apart. I would suggest some absorbent cloth poked through the hole with a screwdriver to get the worst of it out and then try drying the rest with a hairdryer...........
HTH