How long did it work correctly after you did the electrical replacements you listed? Is your wiring done the same as the Operator's manual shows? If so, the key switch only operates the starter. The oil pressure switch controls the fuel gauge (also the temp gauge if that gauge is electric on your 245 diesel) and the excitation wire (with a diode in it) to the alternator. Have you checked that there is power through the oil pressure switch when the engine is running? Is the alternator still a three wire as original? Is there power to the excitation terminal (#1) on the alternator when the engine is running?
It was working correctly for about three days until the alternator went out. Prior to that I did replace the oil pressure switch. Replaced the alternator yesterday and the Amp is working now but the fuel gauge is still acting up. I have traced all wiring according to the schematics. It is a 3 wire but I have been told that I do not need the diode in the #1 wire anymore. Before I replaced the alternator there was power to the #1 with engine running. Did not check after replacement. The new alternator is showing good voltage. How do I check to see if there is power through the oil pressure switch when the engine is running?
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