Usually there are 4 drains, one in each corner of the sunroof. The front corners run to the bottom of the car behind the front wheels. The rear corners run to behind the rear wheels. The actual outlet is usually behind the plastic wheel well liners so you can't see it without removing the liners. The best way to find the drain outlets, if they are not clogged, is to open the sunroof and carefully pour a cup of water into the drain inlets. Then watch where the water comes out.
Don't know about the tail lights, but if you have a sun roof the drain lines are probably clogged. I used a small air compressor to blow out the lines. If you don't have a sun roof, sorry.
There are drain holes that must be cleaned. See saturnfans.com for a how-to
Yes, there are 4 drains at each corner of the sunroof which sometimes get clogged.
Seals are gone or the drain tubes, if fitted, are blocked, ruptured or disconnected
Blow shop air thru the 4 tubes that are in the corners of the sun roof.
Sunroof has four drain tubes to control water seeping in thru the seal. Slide the glass back and you will see two holes in the front corners. Rubber tubes run down the front roof pillars and out near the separation between the doors and the fenders and down the rear pillars and out just in front of the rear wheel wells.
roof scoop or sun roof
Sun roof
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no <><><> The first car did not have a roof at all.
The sun roof came first. When cars and hot rods were first invented, people came up with the idea of making a hole in the roof. The term moon roof wasn't made until the '70s by Ford.