The capillary tube on the gauge is not long enough to reach the thermostat position. 'there is an inoperative sensor {electric} at that location that I may replace with an aftermarket temp sensor/gauge leaving the gauge under the hood in order to not clutter the cab. what type of sensor and location was stock in 1941?
The capillary tube/sensor plus the mounting fitting that hold it out of the water flow (as poor as it may be at the back of the head) came with the new instrument cluster the previous owner bought but never installed........looks stock, is beautiful and all works well except temp indication.