Have a 1988 mercury 90 HP 3 cylinder outboard, 0b302485. My warning module for low oil and over temp is fried, literally. I don't get the system working beep when I first turn the ignition key to run position. I checked power with key in run position on the purple wire out of the warning module and had 12 volts. I then checked the tan wire out of the warning module and had nothing. Also checked the blue wires going to the oil tank and had no voltage. As stated my warning module got fried, but I still had voltage in the purple wire into the warning module. Can someone please advise me on the warning system?
