Just purchased a 91 Maxum with a 1991 75hp ob Mercury. an audio alarm mounted under the dash is constantly going off. It is not the normal beep alarm. alarm is manufactured by Floyd. Like to know what could it be conected to. motor is warm to the touch, not hot. How would I know if any related oil equip is defective? depth finder malfunctioned at same time alarm started. Replaced depth finder, but alarm still sounds. Alarm started 1 day after hitting rocks with prop. Prop was replaced but no change, any help is appreciated.