Electronic sealant meant to help conduct electricity, and prevent moisture??
As for a part location, there is a thread located recently, the same thing (no wipers any mode, etc, and was the relay... He took it out, pressed it together, and heard a definite click (like it was hung up).. replaced it in there and it worked... another guy took his, snapped it apart, and back together and it worked perfectly.
You might try Signature Lincoln Mercury parts express catalog.
Link Ray