Pins 1 and 3 on the connector..30 and 87 on relay...[ NOT 87A ]

Just b/c the fuse has been changed recently means nothing..it is not the fuse that give us the problem, it is the copper holder on the ends of the fuses..they looses contact and have to be cleaned.
That is why we always tell guys to "Spin the fuse " in it's holder..
we also test them with a test lamp on both sides , but at the holder, not the fuse ends ..that tells us if the connection at the fuse/holder is bad..even tho you have a good fuse. Test lamp from both sides to ground verifies 12 V @ both the fuse and the holder...testing the fuse at it's ends can result in passing a V test, but that power does not get to the actual holder connection, so the results are the same as if you have a bad fuse.
They will fool you ...see it all the time.
Spin Them ...even when you replace a bad one ..helps seat them in the holder good a secure.
I personaly don't like that type fuse or holder.

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A Dalton