Hi all. My Cummins tech told me that the Mercathode system is hard wired directly to the batterys and is always on 24/7/365. Neither of my green lights on the Mercathode harness are lit, yet we just lowered my PODs last week and there appears to be no corrosion which tells me they're working. My pod trim tab zincs were about 50% eaten and my transom zinc was 90% eaten. I was in the water 9 consecutive months though from 3/16 to 12/1. It occurred to me that if the little green lights are supposed to be on 24/7/365 and my boat is now 10 years old, would it stand to reason the green lights are just burnt out? Well let me ask that question another way. Any of you out there with boats as old as mine, whose lights are also both out?