I have a 1995 F-150 5.0 with 4r70w transmission. Overdrive light is flashing on gear shift handle, odometer/speedometer isn't working and the cruise control won't work. I have replaced the speed sensor in the rear diff and the speed sensor at the transmission (on the drivers side by the neutral safety switch). There is no mechanical speedometer cable on this thing, and the odometer is digital. Only other plug I can find is on the passenger side of the transmission and is a big square white plug that is currently full of transmission fluid, which obviously doesn't seem right, but I do not know what this is called to look it up. Any ideas on where I should go next?