[Vwdiesel] Another puzzle to solve...

[ken1]

Just had an rude awakening; got up early today, still quite dark outside, started my 1982 caddy and took off. About a mile down the highway, decided to see if bright lights would aid me seeing thru some low foggy spots......Pulled the bright light wand upward and BOOM! was surrounded by total darkness and no Bright LED on. Pulled the wand again and dim lights were restored. Another puzzle to solve.
 

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1982 caddy 1.6L NA running
1967 convertible bug running
1980 caddy project 
1991 2 door Jetta TD restoration in progress