well it is and isnt.problem is if you dont have either a diode OR a light voltage CAN backfeed to the ignition and tractor wont shut off.some folks i think use the accy poition on an aftermarket key switch to break that line and keep it from backfeeding from alternator.a diode of course works sort of like a check valve that only lets voltage flow one way,while a light bulb actually raises the resistance up to where current wont flow.the indicator light on the dash of your car or truck does the same function.it may or may not be neccessary depending on how your tractor is wired.ive changed all my fords over to 12v and personally i use both simply because i work them a lot at night in the heat of summer,and the guages are not lighted.overkill of course.
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Today's Featured Article - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and
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