Oil Pressure Headache.
Aloha all, in need of some electrical assistance. Replaced the oil pressure gauges and senders on my Perkins 6354's. Checked with Faria to make sure gauges and senders match. Faria tech said sender should read about 122 ohms, which it does, and gauge by itself should read 240 then hooked up with other oil gauge should read 120, to match the sender (dual station). PROBLEM is gauges are only reading 65 ohms. All four read 65 ohms. Is my boat haunted? Mahalo for any thoughts.