• Full kit photo

    24-Volt to 12-Volt Conversion Kit For John Deere Diesel Tractors

    $498.50
  • spark plug wire set

    John Deere 4000, 4010, 4020, 45 Combine Spark Plug Wire Set

    $32.50$39.25
  • John Deere 4020 Diesel Dash & Engine Wire Harness (Serial #91,000-200,999 & Modified For Use With A 12 Volt Delco 10SI Alternator)

    John Deere 4020 Diesel Dash & Engine Wire Harness (Serial #91,000-200,999; 12-Volt/ 10SI Alternator)

    $601.50
  • John Deere 2520, 3020, 4020, 4520 Gas & Diesel Positive Battery Cable

    John Deere 2510, 2520, 3020, 4020, 4520 (Gas & Diesel) Positive Battery Cable (Original 24-Volt)

    $65.25
  • wire harness

    John Deere 4020 Diesel Complete Wire Harness (Serial #91,000 to 200,9990) w/ Synchro Range Transmission

    $801.25
  • lighting harness

    John Deere 2510, 3020, 4020 Lighting Harness

    $217.25
  • spark plug wire set

    8″ Fiber Optic Lead

    $33.99
  • John Deere 2520, 3020, 4000, 4020, 4320, 4520 Lighting Harness

    John Deere 2520, 3020, 4000, 4020, 4320, 4520, 4620 Lighting Harness

    $291.50
  • switch

    John Deere 4-Position Light Switch (9-Terminal, Diesel Only)

    $43.99
  • John Deere 2510, 3020, 4020 (Gas/Diesel) Neutral Safety Switch Wire Harness (With Synchro Range)

    John Deere 2510, 3020, 4020 (Gas/Diesel) Neutral Safety Switch Wire Harness (With Synchro Range)

    $26.75
  • switch

    John Deere 4-Position Light Switch Knob

    $14.99
  • full harness photo

    John Deere 3010, 3020, 4010, 4020 4-Light Fender Lighting Harness (Gas/LP/Diesel Models)

    $210.00
  • battery cable

    John Deere 3010, 3020, 4010, 4020 Gas/LP/Diesel Negative Battery Cable

    $44.00
  • wire harness

    John Deere 4020 Diesel Row Crop (Serial #91,000 to 200,999) Complete Wire Harness (Power Shift w/ 10SI Alternator)

    $814.75
  • John Deere 4000, 4020 Diesel (Synchro Range Transmission) Complete Wire Harness

    John Deere 4000, 4020 Diesel (Synchro Range Transmission) Complete Wire Harness

    $1,233.00