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Q: What do I check for an electrical issue if it is not a fuse? on 1994 BMW 325i

fuel gauge, tachometer, and temp gauge, turn signals and brake lights do not work
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You would have to sit down and look at a wiring diagram for your car, see if there is a common power supply or ground shared by the things that aren't working, see if they share a common electrical connector that may have a bad connection.BMW wiring diagrams for your car are not hard to follow but you need the wiring diagram and a good volt/ohm meter. There is a company that independent auto repair shops get their information from, this same information is available inexpensively for people that work on their own cars.. The information is year make and model specific, covering repair procedures, torque specifications, fluid capacities and specifications, service bulletins, component locations, wiring diagrams ect.... Alldata is very easy to navigate
May be best find an independent BMW repair shop in your area that may recognize the problem quickly.
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