'87 chev S-10 fuel issue

I am having major isses with my truck, it all stems from a fuel issue, one day it started as usual, ran for about 20 sec's, then died. At that point, I turn the key to the on position, and heard no fuel pump noise. I assumed the the pump was toast, bought a new one, installed it. And still the same issuse, no pump noise. I have inspected all wiring, and grounds, they all seem to be fine. I started to play around for a new power sourse for the fuel pump. I got power to the pump, it hummed, at that point I had fuel to the in line at the TB, but nothing from the injectors, no pulse, not a drop. I replaced the module in the distributor, still, a no go ! I started to dig in deeper. What I have found, is at the fuse box, there is a 10 amp. Fuse, for the ECMB, now I have searched high and low, no info in my manual, and nothing in my Hanes book, I called the dealership. They have no clue, their shop manuals don't go that far back ( 1987 ) What I need to know is. What is ECMB, and where should I begin to look to rectify this problem. Seems there is nothing from the injectors. This is a 2.8 ltr. TBI 220