Posted by Janicholson on August 09, 2021 at 20:27:07 from (24.240.46.228):
2011 Fiesta. The entire fuse panel under the hood had corroded so much that 70% of the fuses had the tabs corroded off of them. At my suggestion he purchased a good used fuse panel. It has 27 fuses, and ~14 relays in it. The seller of the good replacement cut the box out of a wreck with a demo saw. Chopping close to the box! We have had a recreational time splicing wires. When the battery was installed, the left headlight came on. Disconnecting the right headlight caused it to shut off!. A very long story cut short. Of the 50 plus splices, there was a major discovery tonight. Ford in its wisdom used a brown with blue trace wire from the fuse for the right hand low beam. It also used a brown with blue wire of the same size in the same bundle from the chassis control module low beam control circuit. My neighbor had exactly a 50/50 chance of getting it right. Nope. I surmised that if the module was being grounded through the headlight filament, it would signal the chassis control module to send a lights on signal to the low beam relay. (there was much testing, and two Flukes involved. the headlight wire showed 12v when disconnected, and .1 volts when connected to the filament. this lead me to believe it was signal level, not power level. (the wiring book is 140 pages) We disconnected both brown blue wires and used aligator jumpers to rewire them the other 50% direction. And it got fixed!!! Woof. Jim
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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