I have a 2001 F-250 with gauges. I highly recommend that you be able to see what is happening with you TV while pulling. The tranny temp is vital as also the turbo exhaust temp. This link:
http://www.dieselperformance.com/ind...duct/index/89P
will give you some idea of what I have. There are other gauges available in different styles. The down side that I have to mine is that on bright sunny days the LED display can be a little hard to see, especially if you wear polaroid glass as I do.