overheat

The Perkins in Senta II has neither an oil pressure or overheat buzzer/alarm. I want to add those alarms and wonder if I should go generic or look for Perkins parts. Part of my question is "how standard are such items" ? Thanks. -Sven

I have an E-38 with a Universal 5432. My temperature alarm went off yesterday as I was heading out the channel in Olympia WA. Exhaust water flow was normal, temperature gage read normal, oil pressure was normal, fresh water coolant was full, no smoke in the exhaust, engine was running smooth...