I'm going to wire the fan output to a simple bulb and experiment with that for a bit. I'm using a CPI 5.7 calibration which uses 4x tone wheel which the 6.5 diesel just so happens to have same 4x wheel. Currently just have the glow plugs wired to a momentary switch. Glow control isn't a deal breaker as the main goal was trans control and that is working flawlessly. Thank for your help.