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

#B3028-139, Dash & Engine Wiring Harness for John Deere 4020 Diesel Tractors (Serial #91,000 to 200,999)

Modified for use with a 12-Volt Delco 10SI Alternator

• Made To Look Exactly Like The Original With Our Premium PVC Wire
• Has The Correct Gauge, Color, Wire, & Fuse Holders (If Needed)
• All Terminals Are Soldered & Rubber Sealed
• Comes Numbered With An Installation Guide

Does not include the Neutral Safety Switch Harness or the Fender Lighting Harness.

Does Not Include Battery Cables & Spark Plug Wire Sets;
However, We Can Supply These As Separate Products

Note: When using this harness with a 10SI / 3-wire alternator, the charge indicator lamp will work.
This harness may also be used with a 1-wire alternator, except the charge indicator lamp will not work.