John Deere 3020 Diesel Modified 12V 10SI Alternator Engine Main Harness (Up to Serial #67,999)
$309.00
#B3028-192, Main Wiring Harness For John Deere 3020 Diesel (Up To Serial #67,999) Tractor
NOTE: May Be Used With A 1 Wire Alternator, Except The Charge Indicator Lamp Will Not Work!
Does Not Include Fender Lighting Harness Or Neutral Safety Switch Harness.
- 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
- Each Wire Comes Numbered with an Installation Guide
Doesn’t Include Battery Cables & Spark Plug Wire Sets;
However, We Can Supply These As Separate Products.

#B3028-192, Main Wiring Harness For John Deere 3020 Diesel (Up To Serial #67,999) Tractor
Modified for Use with a 12v 10SI Delco Alternator
Replaces the Following John Deere Parts
#AR34275 Main Harness
Fits the Following John Deere Tractors
John Deere 3020 Diesel Row Crop (Up to Serial #67,999) With Synchro range Transmission
John Deere 3020 Diesel High Crop (Up to Serial #67,999) With Synchro range Transmission
John Deere 3020 Diesel Row Crop (Up to Serial #57,369) With Power Shift Transmission
John Deere 3020 Diesel Row Crop (Serial #57,370–67,999) With Power Shift Transmission
| Weight | 1.6 lbs |
|---|---|
| Dimensions | 9 × 9 × 1.5 in |
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