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remove your air cleaner then right behind it (closest to firewall) Is your glow plug controller!

that is where the controller is for the glowplugs, but the relay switch for the glowplugs is on the passenger side of the motor. it is bolted on to the side of the fender. hope that answers your question

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14y ago
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Q: Where is the glow plug relay on a 1988 ford f250 7.3L diesel?
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