Mercury outboard alarm module replacement I tested the Mercury/Mariner Oil Warning Module ; Fits 1990-1999 2-stroke outboards and SportJet engines with oil injection ; See Long Description for a list of compatible models ; Check manufacturer's recommended part numbers to ensure a proper fit for your application › See more product details Key ON but the motor NOT started, a continuous alarm is generally a bad alarm module OR a bad temp sender. The part number is ***** but I have read online that 41470A26 can also work. Do you know that to be true? Mechanic's Assistant: Have you tried contacting Mercury or a certified dealer to confirm if part number 41470A26 is compatible with your 1995 Mercury 200hp v6 carb? No I haven't If you get all the sensors disconnected and you still have an alarm, the alarm module may be bad. I have a 1989 Merc 100 hp outboard and the alarm sounds constantly with the key on or off. I checked all the wires for corrosion or bad grounds but this engine is spotless. I have a 1989 Merc 100 hp outboard and the alarm sounds constantly with the key on or off. I am wondering if I should replace the oil warning module. . I purchased this motor and have never run it yet. I would appreciate any suggestions. Disconnecting the overheat sensor didn't fix it. I have diagnosed the alarm module to be faulty. Of three people I know with Mercury motors, all three have had failures of their alarm module and had to replace it. This is a very frequent condition. Replacement part is 144-4857-16. The part is not serviceable. I installed a new wiring harness and am pretty confident it is wired correctly. TEST, with key ON, motor off, while the alarm is sounding, disconnect the tan wire from the temp sender on the motor, Earlier this summer I had the joy of a failing oil warning module. I was getting a warbling sick cat sounding continuous alarm - but the motor was not over heating. The part number (for the module) is 14857A14.
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