So what is it? Red "light"?

So the fuse was inline off the block then? The pieces look familiar. I'll get down to the garage at lunch and see. I do know that the switch is installed on the parking brake now.
No inline fuse holder.
The fuse and one wire goes to accessory slot of your fuse box. The other wire goes to the switch mounted on park brake mechanism. Switch smply supplies a ground to light bulb