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John Deere

Where do you find a diagram of a John Deere 4020 LP wiring diagram?


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February 14, 2010 2:14AM

The best one is in the shop manual. There are two different shop manuals depending the vintage of the tractor. Preside console or side console (split at 201,000). There is a fair on in the parts catalog and a poor one in the I&T manual. There are actually several in the early 4020 parts catalog because there were at least three variations on the wiring harnesses and connectors plus the variations for engine fuel.

Gerald J.