I have a 08 350 4x4 and my oil cooling fan isnt working. I had a ground wire burn all the way from the front to the back in the main wiring harness. i replaced the burnt ground wires, and put a new stator and cdi unit on. But now my oil temp light is on and my fan isnt working. So my question is if i were to run my fan using a toggle switch is there a way to tell if my oil is being sent through the cooler in other words i need to make sure the oil pump is working right.