Author's Notes:
Eight and Fitz. Written for the prompt "The blind leading the blind" from lomelinde at the Merry Month of Drabbles meme. Originally posted to AO3.

Fitz doesn't know anything about this technology, and the Doctor is having other issues.

"Fitz," said the Doctor. "Has the light under the cell door gone?"

"No," said Fitz.

"Then the brainchip must have started to malfunction, like I predicted. Visual nerve connections have gone first." He took a deep, panicky breath, reaching out. "Just as long as I can walk..."

"We've got to hack into the lock first! How will you—"

"You'll have to do it."

Fitz looked helplessly at the Doctor. "But I don't know what any of these wires are!"

"Don't worry, I'll talk you through." His voice became curiously serene, even as Fitz was panicking. "First, find the green wire..."