You left a few words out of your sentence, so if you are disconnecting the battery, then yes. Placing the test lamp in a series with the disconnected battery cables is just as sensitive. The battery cable just runs some distance and makes a negative connection to the engine or chassis, both in actuality. I did not go there on the tractor details but I DID consider the fact that that tractor may actually have a ECM. I was going to wait for his results. Adding computers or ECMs and BCMs (body) complicates this test a bit. In fact I have been away from professional auto repair long enough that I would outright tell you that I probably cannot give you the proper instructions to what I call draw or drain check a car like that Subaru. When a computer is disconnected and it is reconnected there will be a couple seconds of a higher power draw until the memory section repowers at which time the draw will drop to an acceptable level.
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Today's Featured Article - A Tractor's Point of View - by John Manley. I began my life on August 3,1941. I was actually built at different times and days but I was officially an M Farmall on August 3.I was real nice and shiny. That�s me, in the old picture, third from the left. I was loaded on that train and sent to a little town in South Carolina. I didn�t get to see much of that town. I was moved off the train fast and on to the dealer�s
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