My first 4X4 is a project in the making. More like a butt-whippin in progress and I aint winning
Bought 90F150 4X4, had AOD Tranny rebuilt, put my own Dr. Strange Luv hands on the 5.0; all is good there, BUT!!!!!!!!!
My Interval Governor when plugged up make noises like an old fashioned radiation detector and the volt meter on the dash is dancing back and forth during this time. Signal lights, Tail and Brake lights have taken a vacation and this is racking my nerves; but the Head lights work. Power windows no werky-poo, but the door locks and speakers play. Just what you need in the heat of AR this time of year
Changed out; interval governor (same symptoms), that aint it. Changed Brake light sensor under the dash, that aint it. Changed all bulbs and that aint it either. Even put a hot lead on the wiper motor and............ u guessed it; nothing!!
This area being a bunch of bow-tie weenies, there is not a lot of help in the way of parts, so waiting for the mail or coming across parts is another source of frustration.
Truck will fire right up and drives very well...........but we ridin dirty and safety first. In the mean time, plenty of off-road driving until I can come up with some sort of solution to these electrical gremlins. Oh yea, one of them just texted me and told me to quit!!

 

In years past I have found that all Fords need a good solid clean ground connection to get the best electrical flow. Make sure all ground connections are clean and shinny. Dont forget to check the condition of the wires and strap eyelets for corrosion that is hard to see.

 

PlaneHunter, thank you for that, is there any place I should start looking? Aint the most inclined when it comes to electrical unless its just plain obvoius

 

I always start at the battery connections and work our from there. As a rule if the battery cables (both of them) even look questionable, I replace them, but don't reduce the cable size. I sand all connections so that they show clean metal befor bolting them down. If it's bolted to the body or frame, it probably needs a clean connection to ground. It's really hard to call what to do next, just look at all connetions and make sure they are clean. This includes all electrical plug connectors. They may look clean, but oxidation can look "white" or "kind of clean" and can cause problems. Chasing electrical gremlins has sent more than one Ford owner over the edge. LOL

 

also dont over look the switch that the key connects to down on the steering column under the dash my 1988 had rear taillight issues and i was stumped till i checked the switch , some were known to give electrical problems like that if worn or corroded or just not functioning correctly.