It's called a pinpointer. It puts a pulse on the line that goes to ground at the fault. The pulse radiates out from the fault (picture the ripples from throwing a pebble on a pond). The sensor that picks up the signal has two probes usually marked red and black. Placing the probes in the ground the probe that picks up the signal first will be indicated. Moving the probes in the direction of the indicated probe in a football chain fashion until the indicator picks up the opposite probe then narrowing down the distance between probes until the fault is "pin pointed". The pinpinter we use is manufactured by H.J. Arnett. It sounds simple however sometimes it takes you right to the fault and sometimes it sends you on a wild goose chase to a ground rod or telephone splice or whatever.
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Today's Featured Article - 12-Volt Conversions for 4-Cylinder Ford 2000 & 4000 Tractors - by Tommy Duvall. After two summers of having to park my old 1964 model 4000 gas 4 cyl. on a hill just in case the 6 volt system, for whatever reason, would not crank her, I decided to try the 12 volt conversion. After some research of convert or not, I decided to go ahead, the main reason being that this tractor was a working tractor, not a show tractor (yet). I did keep everything I replaced for the day I do want to restore her to showroom condition.
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