Volvo 350D Excavator Wiring Harness — All 5 Sections
The Volvo 350D uses 5 separate harness sections that ECS builds. They are not interchangeable: the part number on your old loom decides which one you need. Below they are grouped by where each section sits on the machine, with the part numbers and the symptoms that point to each group.
Which section do I actually need?
Start from the fault, not from the part name. Find the symptom the operator reports, then open that group.
| Section | First symptom to look for | Group |
|---|---|---|
| Main Harness | Many systems affected at the same time | Main Harness group |
| Alternator Harness | Battery not charging, warning on | Alternator Harness group |
| Engine Harness | Intermittent misfire or a dead cylinder | Engine Harness group |
| Instrument & Interior Harness | One instrument or accessory dead | Instrument & Interior Harness group |
| ECU / Controller Harness | Controller dead or rebooting | ECU / Controller Harness group |
Main Harness 1 part
It is the trunk harness: the largest loom on the machine, carrying most circuits between the cab, the engine and the rear structure.
| Part # | Description | Price | Stock |
|---|---|---|---|
| 14696405 | Main External Wiring Harness | $2096.00 | In stock |
Alternator Harness 1 part
It is the short charging-circuit harness between the alternator, the battery and the machine harness.
| Part # | Description | Price | Stock |
|---|---|---|---|
| 14787186 | Alternator Wiring Harness | $299.00 | In stock |
Engine Harness 1 part
It runs inside the engine compartment, clipped along the block and head and routed past the front cover. On most machines it is the longest harness on the engine side and the one closest to exhaust heat.
| Part # | Description | Price | Stock |
|---|---|---|---|
| 23870650 | Engine Wiring Harness | $299.00 | In stock |
Instrument & Interior Harness 1 part
It sits inside the cab, behind the trim, feeding the instruments and controls the operator sees and touches.
| Part # | Description | Price | Stock |
|---|---|---|---|
| 14638637 | Instrument Panel Wiring Harness | $165.00 | In stock |
ECU / Controller Harness 1 part
It sits between the controller box and the machine harness, in the cab or behind a panel, and carries the low-level inputs and outputs the controller reads.
| Part # | Description | Price | Stock |
|---|---|---|---|
| 14639083 | Engine ECU Wiring Harness | $240.00 | In stock |
Not sure which of the 5 sections is yours?
Send a photo of the tag on your old harness to WhatsApp +86-13714733803 and we will confirm the part number against this list before you order. Getting the section wrong is the most common reason a replacement does not fit.