Well is depends... Did the boat EVER have the alarm? Bc some of the older boats did not come with alarms. It was not a federal regulated item until the late 90s and an alarm was an elective choice by the manufactur. Now this said my 1993 did not come with an alarm, so for $38 I purchased an alarm with the oil pressure sender and temp sender.
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Not Penny's Boat
1993 190 Horizon 5.0L EFI http://www.smwebhead.com/phpBB3/viewtopic.php?f=3&t=111361977 14' CMF Skiff SOLD
2015 Emotion Stealth Angler 11