Question about transmission temp gauge wiring

[PCline]

OK, this may be a silly question, but I just installed a DiPricol transmission temperature gauge along with boost and EGT. Needless to say, the transmission gauge didn't come with any documentation.



I think I may have incorrectly assumed the transmission temp sending unit was a thermocouple type unit (i. e. , it produces a low voltage as a function of temperature). As such I installed the gauge with the "T" terminal on the gauge wired to the spade on the sending unit and the "B" terminal on the gauge wired to the body of the sending unit (i. e. , ground). I originally thought "T" and "B" stood for "Thermocouple" and "Body".



After putting a multimeter across the sending unit last and getting 45 ohms resistance and 1. 8 mV voltage, I now think it's a resistive transducer and the "T" and "B" stand for "Transducer" and "Battery".



Can anyone confirm this for me? I don't really want to put 12V to the guage until I know it's supposed to be wired that way.

 

[Prairie Dog]

Your second guess is correct: T= temp sending unit and B= battery.

 

[PCline]

Thanks Prairie Dog.



After 30-some views and no replies yesterday, I actually decided to take a chance and put power to it last night and it worked great.



Maybe this thread will be helpful for someone else in the future.

 

[Prairie Dog]

Glad to help. On my last CTD, I installed a temp sensor in the transmission and in the eng and used a rocker switch (either a SPDT or DPDT) to chose which one I wanted to monitor. It was almost like having two gages in one. Heck I might add a rotary switch this time and include the differential temp as well!