The brass plunger doesn't provide voltage - it keeps the fiberoptic "wire" in it's place. Follow the "wire" to its other end....it probably slipped out of it's socket there. "Spider" is a term that may come to you, when you see the whole thing. Oh...it's behind the A/C controls.

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It is a truism that almost any sect, cult, or religion will legislate its creed into law if it acquires the political power to do so. Robert A. Heinlein


09 Jetta TDI
1985 300D