So the right headlight went out on the 240 a couple days ago. I tried pressing on the connector under the hood, because I've had one come loose on me before. No luck, so I stopped by the local Kragen and picked up a Sylvania Silver Star for a replacement. Since yesterday was my birthday, I had a few incoming phone calls from family and friends after work, and afterward it was getting late, so I didn't install the new light until this evening. Pop it in-no luck. Tried the high beam and it worked. Then I remembered that Mercedes engineers like to wire lights in odd ways. I pulled out the book and found that indeed, the left low beam, left high beam, right low beam, and right high beam all go through seperate fuses. I pulled the cover off the fuse block and inspected the appropriate fuse. Not blown, but corroded. I replaced with a fresh one, and suddenly all was good.

Moral of the story-always check the fuses first.

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Whoever said there's nothing more expensive than a cheap Mercedes never had a cheap Jaguar.

83 300D Turbo with manual conversion, early W126 vented front rotors and H4 headlights 401,xxx miles
08 Suzuki GSX-R600 M4 Slip-on 26,xxx miles
88 Jaguar XJS V12 94,xxx miles. Work in progress.
99 Mazda Miata 183,xxx miles.