The other day, I saw a chip detector pulled from a main transmission that was covered with metal....
and the light did not go off....
The reason the plug was pulled was a grinding sound noted during coast down...
The electrical system worked, and this was not the first time the operator has noted this problem with the chip detector.
In the past, the chip detector was cleaned, and checked for continuity, with no faults found.
Theories abound about sludge in the oil acting as an insulator...the chip plug is on the bottom of the transmission with no oil flow around it...
Just wondering if anyone had an experience with the system working properly....