the abs system on a 2wd cos has it's own loom separate to the main loom and fusebox. it does connect to the main loom though, to get power on ignition 1.

look behind the dash cover on the passenger side and you'll find the abs ecu there with the engine ecu. trace the rest of the loom from there, and you'll find a couple of, i think purple relays, and it should be bolted directly to the battery terminals.