glow plugs
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super easy. get a test light on it. the one big post is always hot. the other big post is the switched power. clip the wire to the switched post and then sit in the truck and ground the probe end of the test light somewhere inside the cab, almost anything bare metal will work. turn the key on and if it lights up you're good to go. i wired up a led to mine so i have a more permanent test light.
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GT_Eleanor
Ford 83-94 6.9 and 7.3L General
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09-14-2015 10:52 AM