Each year usually has a different ECU, but it's unlikely that's your problem. The F1 circuit, is fairly complex. That blue/black wire runs throughout the car, running from the main relay not only to the fuel pump, but to the EGR solenoid, the EVAP solenoid, torque converter (if auto), idle speed solenoid, distributor, injectors, etc.
Section 8A page 10 and 11 at Acks FAQS may help: Ack's FAQ 1996 Geo Tracker Factory Service Manual
You may want to start by pulling the connector to the fuel pump, behind the left rear tail light, to see if the fuse continues to blow. This is a known rust area. You can also check to see if any of the wires to the o2 sensor on the exhaust manifold are exposed and hitting the hood. If either of these corrects your problem, consider yourself really lucky!! This is a bit of a nightmare circuit, as so many things run off of it. If you remove the fuse, and use a test light in its place, the light will be bright because there is a short somewhere on the fuse circuit. Then disconnect components, one by one, until the light dims or goes out. Then you have found the bad circuit.