Fuse #9 (5A – ECM Keep-Alive) is fine, but something else is parasitic. Pull fuses one by one while monitoring amperage with a multimeter. Common culprits: Radio memory (Fuse #8) or under-hood fuse “C” (Ignition feed).
Critical fuses for the ECM and transmission (especially if equipped with an Allison automatic) are usually near the top or separate near the batteries. 1994 freightliner fl80 fuse box diagram
: For standard fuses, check the metal arch inside the plastic; a broken arch indicates a bad fuse. Fuse #9 (5A – ECM Keep-Alive) is fine,
