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That $40 wiring diagram book from Spruce paid for itself in one job
I picked up this old school aircraft wiring manual at Aircraft Spruce for 40 bucks last spring. Used it to trace a weird intermittent fault on a 172's nav light circuit that I'd been chasing for two days with no luck. Found a corroded splice in the wing root that wasn't on the digital schematic at all. Has anyone else had luck with those printed Spruce manuals over the factory diagrams?
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