On the back of the instrument cluster there is a lone wire plugged into the back near the clock that provides a constant 12v for the clock. This wire is seperate and not bundled with any other wires. Its easy to locate. If the fuse were gone it would not power the clock even if the ignition is on.

Pull the instrument cluster and check for voltage on this wire. If none, then you have to back track to the source to find the interruption.

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I got too many cars!! Insurance eats me alive. Dave

78 Corvette Stingray - 3k
82 242 Turbo Volvo - Manual - 270k
86 300e 5 speed manual - 210k
87 420sel - 240k
89 560sl - 78k
91 420sel - 205k
91 560sel - 85k
94 GMC Suburban - 90k
97 Harley Davidson Heritage Softail - 25k
00 GMC Silverado 1 ton 30k