How to do the DeLorean Fan Fail Unit, fused jumper fix
My 1983 DeLorean oddly enough had the original blue fan fail unit still in the relay compartment. From what I have understood, almost every owner, not concerned with concour, has replaced it with a jumper wire, it was even a service bulletin from DMC in the 80s applying this at the factory, and instructing owners to do so. Even better than the jumper, is a fused jumper. You can also replace it with an actual working unit, like the one Dave McKeen provides. The original problem is that the fan fail unit, which is supposed to alert you if one or both fans does not work, never actually was a reliable solution. The blue relay itself was quite a piece of engineering at the time, relying on two magnetic fields inside the relay, but since the fans were replaced by one team to fans requiring more amps, but not informing the electrical team, the fan fail unit simply never worked. Below I have put together some instructions for how to make and install the fix. Here are some other sources, describing it.
Edit: I have since this was written actually purchased the Solid State Fan Fail Unit and also the Solid State Fan Relay from Dave McKeen, but not yet installed it in my car.