Like Bob said, it's time to get out the old test light or voltmeter. I beleive a 4620 has a main circut breaker and a starter relay just above and to the rear of the starter. Check for battery voltage at those components. Check for battery voltage at the alternator's "B" terminal. I worked on a 4320 not too long ago with a very similar problem, the harness rubbed thru where it runs behind the engine block, causing the heavy wire between alternator and main breaker to burn up. Also double check your battery cables very carefully. Wiggle around where each cable is crimped into the terminals on each end while someone watches for the dash lights to come on. Had a combine this week that acted very much like dead batteries, in the end it turned out to be that the terminal on the engine block end of the ground cable was loose, was discovered by wiggling on cable, and problem was only visible after cutting off the heat shrink wrap over the terminal.
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Today's Featured Article - Box Plow Blues - by Tom Schwarz. One of the first implements most tractor owners obtain is the box plow. For very little money, this piece of equipment promises to plow and flatten any hill or vale on your ranch road or farm. At least that's what I thought! As simple as a box plow appears, it can be rather challenging to make work correctly. In our sandy soils of Florida, traction is king. You can never have wide enough tires or heavy enough weights to get all the traction you want … unless you own a monster tractor. U
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