As miangus posted the diesel wiring is different. The alternator will be excited from the oil pressure switch. I do not have a 175 wiring diagram to rework for you, but from other MF diagrams I have, I believe there are connections for other things, made at the external regulator, which will need to be addressed as part of eliminating it properly. You will need a diode in the new excitation wire which will need to be run from the oil pressure switch (normally located behind the oil pressure gauge in the dash). You can purchase pigtails for the alternator with diodes already in them to save chasing for a diode to build your own (or adding a resistor or indicator lamp).
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Today's Featured Article - What Oil Should I Use? - by Francis Robinson. I keep seein this question pop up over and over again in discussion groups all over the web. As with many things there are often several right answers and a few wrong ones. Some purist I'm sure will disagree to no end with what I will tell you but most of us out here in the real world don't really care do we ? Some of them only bring their noses down out of the air long enough to look down them anyway. If you are like me you are only doing this old tractor stuff because you enjoy it. You
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