| Relay | Function | |-------|----------| | K1 | Main Power Relay (Switched Battery) | | K2 | Headlight Relay | | K3 | Work Light Relay | | K4 | Starter Interlock (Neutral Start) |
(For Tractors built 1993–1998 / Serial No. Prefix: 6400) Printed: 2021 Reference fuse and wiring diagram for 6400 john deere tractor 2021
For a 2021 maintenance session on a 6400, use only ATM (mini-blade) fuses for the cab box and JCase (low-profile) fuses for the high-current chassis box. Do not use off-brand fuses; stick with Littelfuse or Bussmann. | Relay | Function | |-------|----------| | K1
Do not trust random JPEGs from forums. For a 2021-accurate diagram: If you have a 2021 registration for a
While the John Deere 6400 chassis was produced primarily between 1993 and 1998, the "2021" reference typically applies to:
If you have a 2021 registration for a 6400, your wiring should conform to John Deere’s P6 (PowerTech) 4.5L/6.8L electrical standard with a 12-volt negative ground system and ISO 11783 (virtual terminal) compatibilities for add-on implements.
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Tractor Serial Number: _________________________
Date checked: __________________________________
Fuses replaced (type/size): ________________________________
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