I have 2 red warning Indicator Lights on my dash. When I turn the key it lights up and a buzzer goes off until I start the engine. I know these indicators are for High water temp or low oil pressure. My question is where do I find these senders on the motor? My mortor is a 420 HP.
Thanks

the temp warning sender should be in the water neck/ t stat housing or front of intake. it should have a red transparent film tape around it and a tan with blue tracer wire going to it.
the oil pressure unit may be on the left side near the oil pan/ block mating area.

Will the sender wire run to both senders?

ttt

Yes...the wire loops from the oil pressure sender to the water temp sender. If the Merc alarm buzzers go off, you will need to look at all the gauges to find the issue.

Thanks

sorry, yes ait does as ben stated.