{"product_id":"cat-502-5390-machine-wiring-harness","title":"CAT 502-5390 Machine Wiring Harness Caterpillar Excavator Internal Wire Harness OEM","description":"\u003ch2\u003eCAT 502-5390 Machine Wiring Harness — Internal Wire Harness\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eCAT 502-5390\u003c\/strong\u003e is the OEM internal machine wiring harness for Caterpillar heavy equipment. Wrapped in Caterpillar's signature \u003cstrong\u003eorange braided protective sleeving\u003c\/strong\u003e, this harness routes electrical signals and power throughout the machine — connecting the ECM, sensors, solenoids, and cab electronics. A damaged or broken harness causes intermittent faults, fault codes, and electrical failures that can halt operation entirely.\u003c\/p\u003e\u003ch3\u003eHarness Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Part Number:\u003c\/strong\u003e 502-5390\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e CAT \/ Caterpillar\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Machine Internal Wiring Harness\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSleeving:\u003c\/strong\u003e Orange braided protective loom (OEM Caterpillar standard)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnectors:\u003c\/strong\u003e Multiple Deutsch DT\/DTM connectors with red secondary locks + large multi-pin chassis connectors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition:\u003c\/strong\u003e Used — inspected, no burnt wires or broken connectors\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eCompatible Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCaterpillar medium to large excavators (336D \/ 336E \/ 340D \/ 349D \/ 349E series)\u003c\/li\u003e\n\u003cli\u003eContact us with your machine serial number to confirm fitment before ordering\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Choose BuyECM?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e✅ \u003cstrong\u003eElectrical specialists\u003c\/strong\u003e — every harness inspected for continuity and connector integrity\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eOEM quality\u003c\/strong\u003e — genuine Caterpillar braided sleeving and connectors\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eAnti-static packaging\u003c\/strong\u003e — protected during transit\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eFast worldwide shipping\u003c\/strong\u003e — DHL \/ FedEx \/ EMS with tracking\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eExpert support\u003c\/strong\u003e — send your machine serial number for compatibility confirmation\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e⚠️ \u003cstrong\u003eImportant:\u003c\/strong\u003e Please provide your machine serial number before ordering to confirm this harness matches your application. Harness routing and connector positions vary by machine year and configuration.\u003c\/p\u003e\u003cp\u003e📦 \u003cstrong\u003eShipping:\u003c\/strong\u003e Dispatched within 1–2 business days. Tracking provided automatically.\u003c\/p\u003e","brand":"Caterpillar","offers":[{"title":"Default Title","offer_id":43196011151478,"sku":"502-5390","price":299.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0659\/2387\/4934\/files\/502-5390_2_4898f00d-86ba-48f7-9035-e97fcb7aebd3.jpg?v=1773387026","url":"https:\/\/buyecm.com\/products\/cat-502-5390-machine-wiring-harness","provider":"BUY ECM","version":"1.0","type":"link"}