After all, just my opinion. But for the $$$ everyone spends to get a cluster with transmission temp and get it programmed, they could get one of these, that can pull codes, show up to 8 parameters, and even be used on the next vehicle.
https://www.amazon.com/gp/aw/d/B00ZDNI8Y4/ref=mp_s_a_1_1?ie=UTF8&qid=1482167493&sr=8-1&pi=SX200_QL40&keywords=edge+insight+cs2&dpPl=1&dpID=41XV8e3LRoL&ref=plSrch
Also, some of the gauges (coolant temp) give a dummy reading and a monitor will give you actual readings. The touchscreen model will run a camera as well.
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