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Question! Does anyone know if there is a service port or any other port on the transmission that a sending unit can be installed for use with a trans temp gauge? On my Ford Super Duty it has a 4R100 tranny and it has a nice convenient service port that the sending unit screws right in to. I plan on towing with this vehicle so I'd like to monitor the trans temp since I encounter lots of hills in my travels. Any help would be appreciated.