Originally Posted by 69wannabe
I pulled the #3 and #7 fuses out and no change. It's raining out today so i'm basically throwing in the towel. They have to have it for work tomorrow so i'm just gonna let them have it back and tell them to take it elsewhere. Hard to fix wiring problems without a FSM to follow. I do appreciate your responses REV and I was hoping to make it work but like I said above wiring on a late model is over my head and if I had a week or two to pick at it I could most likely come up with a solution but trying to track down faulty wiring in a couple of days is overwhelming for me.
Unfortunately if I had to make a quick diagnosis of the problem, I'd say its either the multifunction switch or its connector. I know you said you replaced the switch but, based on your description, that's were it leads back to. One other place that might cause these type of problems would be the connection under the drivers side carpet that passes through the cab. This is a know problematic connect and ground point on Rangers due to water leaks/corrosion.