"Piggy Back" Fuse available for Glass Fuse?

I don't know the year you're working on, but @krazykuda's tactic is a good one.
Look for an unused circuit branch. Shop manual diagram should clue if there was one for optional console or other gage lighting.
Definately several ways to skin this cat.

Connector on right is the one on a '67 for console or console tach. When installed the connector is close to the ashtray