Sea Ray electrical diagram 1988 30 Weekender 2x 350 inboards

[estame6]

Can anyone help in locating a Sea Ray electrical diagram 1988 30 Weekender 2x 350 inboards.
Many thanks .....Dave

[estame6]

I'm looking specifically for anything that covers the alarm system. Starting up the engines this year I received an alarm on my stbd engine. It took approx 30 seconds for the audible alarm to sound and checking the gauges my temp and oil pressure are normal. After checking the engine after warm up and convincing myself all was ok I ran to our dock for approx an hour without any problems. If I could have found the noise maker it would have been re-attached to the keel. This, where ever it is, is either getting a signal from somewhere or has a defective board. Any suggestions anyone, many thanks....