1990 V12 oil leak passenger bank dripping onto exhaust

Hello - I saw a thread talking about a possible sensor on passenger side under head area that will sometimes fail causing a very persistent oil leak onto exhaust. I have this issue, but can’t seem to find the thread where someone described the part to order. Any ideas would be great
Browns Point, WA

did you find it, i too have such a leak

so far it was from a switch/relay item fastened into the block - no leak since removing and replacing it