'87 TBI fuse issue

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Blew a fuse in my '87 with TBI 350 today. While slowing to an intersection the truck stalled. It would crank but not fire. Listened for the fuel pump (electric in the tank) and couldn't hear it. Started checking fuses and found the ECM B fuse was blown. Replaced it and she fired right up. About 10 miles down the road it blew again. So I towed it home.

So the question is, would a bad fuel pump cause that fuse to blow? Or suggestions on where to start looking. What all does the ECM B fuse power? The pump was replace 5-6 years ago. I think the fuel pump is run through a relay on the fire wall.

Any suggestions are appreciated. Thanks in advance.

Also below is a pic of the manual. The ECM B fuse is at the lower left above the mounting hole.