Transmission cooler and gauge

Preparing to tow a TT and wondering if anyone reccomends adding a transmission cooler and guage. I can't seem to locate a transmission temp gauge so any reccomendations for that would be appreciated as well.

Thanks in advance for your thoughts/suggestions!
:2cents:

Gale Banks Engineering has Trans Temp Gages. It will come with the sensor too (www.bankspower>com)

Except for the label the temp gage and range is the same as an engine oil temp gage. ( 0 - 320)

Hope this helps