Ford likely uses what's called a "cold" solder with the robots. I seriously doubt that even China uses manual solderers these days. Cold solder is not cold, but momentary electrical arc liquifies the solder as it is applied. It cools nearly instantly. Quick joint, but not a reliable joint. I have yet to remove my 05's instrument cluster, but I'm curious to see if Ford still uses the old printed circuit boards with the really wide circuitry like on their older vehicles. Those are top notch IMO as compared to GM's crapola.
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