starboard side, mounting plate for sw boxes and etc. there will be a terminal block that should have three tan/brown wires under a screw.. one will go to tha starboard head over heat sensor.. one will go to tha oiler module on tha other side.. one will go into tha harness.. turn tha key on and disconnect each one one at a time starting with tha over heat then tha module.. if it stops when ya disconnect either one that will be tha bad sensor and or module...if it doesn't stop with either one of these disconnected then it may be tha buzzer itself and/or tha harness wiring... in order ta get a buzzer something has to be "grounded" with one or more of these four things.....