Caterpillar 336E Control Valve Wiring Harness

Part number reference for the 369-0155

This harness is one part sold under one number. Suppliers and parts books write it differently — you may see it as 369-0155, 3690155 · CA3690155. They are all the same part; the number on the tag of your old harness is what settles the order.

If the tag shows a different number entirely, do not order by eye — send us a photo of it on WhatsApp and we will match it against the catalogue before anything ships.

Where this harness sits on the Caterpillar 336E

It runs from the control valve block on the frame up to the ECM or the machine controller, clipped along the boom or the frame as it goes.

What it connects

• Controller to the proportional solenoids — the current commands that set spool position and flow for each function.
• Pressure switches and sensors back to the controller — the feedback that tells the controller whether the spool actually moved.

What a failing Caterpillar 336E harness looks like

These are circuit-level symptoms, not a diagnosis. The same behaviour can come from a sensor, an ECM input or a mechanical fault — the checks below are how you tell them apart.

How to confirm it is the harness before you buy

1. Compare the part number on the old harness. The number is printed on a tag or moulded into the main connector body. If it does not match, stop — stop here and send us a photo, because two sections of the same machine are not interchangeable.
2. Resistance test the suspect run. Disconnect both ends and measure end to end. A reading that is far above the others in the same loom means broken strands; a reading to ground means chafing.
3. Wiggle test under load. Back-probe the circuit with the machine running and flex the loom by hand along its length, especially at clips and at the cab or boom entry. If the meter or the fault jumps, you have found the run.

Where this part sits in the Caterpillar 336E range

ECS lists 2 harnesses in this section group for this machine. At $339.90 the 369-0155 is the most expensive, against a range of $119.90 to $339.90. Stock on hand: 3.

The closest part in price is 369-0168 at $119.90 — $220.00 apart. The two are separate looms; the tag on your old harness settles which one you need.

We photographed this exact unit: 6 images on this page are of the 369-0155 we have in stock, not a catalogue picture. Price tracks section size and how much of the loom is enclosed, not condition — every part we list is new build.

Other harness sections for the Caterpillar 336E

All 7 harness sections for the Caterpillar 336E →

Same type of harness on other machines

• 360-6240 — Caterpillar 320E Control Valve Wiring Harness
• 369-0194 — Caterpillar 320E Solenoid Valve Wiring Harness
• 527-1870 — Caterpillar 320GC Telescopic Valve Wiring Harness
• 549-9283 — Caterpillar 320GC Control Valve Wiring Harness
• 299-2832 — Caterpillar 323D Directional Valve Wiring Harness