When you check the tail lights be sure to use a flash light, pull the trunk carpet and wheel well liners. It is very difficult to see a leak when it leaks from the tail light gaskets or the tail light trim. This is because it runs down behind the pinch weld and then down under that plastic channel that holds the wire bundle. Then it runs down either side of the bundle and down in to the wheel wells. Also, look closely (with a flashlight) at the "end studs" on the trim beneath the tail lights on each end. There is a small nut and washer that secures the trim. A very small stream of water can run down from there. It is VERY difficult to see if it is leaking from there too.

I forgot to mention above. Don't rule out a bad or leaking trunk seal too.

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AJ

1985 300D (SOLD)