Ohhh, OK. I feel like a dufus. I had to completely remake the harness on my first overdrive and I undid every wire and recrimped it back together. I remember this process but I have no memory of installing the relay. I went and got my car out of storage today and sure enough, there was a relay there on the core support with an inline fuse (a new one) that I had installed. I don't remember doing this at all.
That's really helpful information about the Ford's having the fuse on the relay and Chevy's didn't. I thought I had the wrong relay, but now I know mine is correct.
