Gillig Cummins Jumper Harness
GILLIG CUMMINS JUMPER HARNESS
ORDERS PLACED BEFORE 3PM EST WILL SHIP SAME DAY
WARRANTY
1M MILES OR 1 YEAR
PRODUCT DESCRIPTION
This is a Remanufactured, Tamerx Jumper Harness, Tamerx part number 82-86388-000 ( OEM Part Number 82-86388-000 ). This part is primarily made for a Cummins , and comes with a One Million Miles or One Year Warranty. For additional warranty info Click Here
Additional Notes: Harness, Jumper, Delphi WPT-3 & WPT-4 Connectors
OEM NUMBERS
| Primary OEM | 82-86388-000 |
| Additional OEM | 82-86388-000 |
ADDITIONAL DETAILS
| CONDITION | Remanufactured |
| UPC / Barcode | 00840490541825 |
| WEIGHT | 3.00 LBS |
SHIPPING OPTIONS
Ship Weight : 3.00 LBS
UPS Ground, 2nd Day Air, Next Day Air
SHIPPING POLICY
Tamerx Diesel Products ships via UPS Ground. Next day air shipping can be arranged for a reasonable price of anywhere from $50.00 - $100.00 depending on the weight of the product and your location. We will do everything we can to make sure that you get the service you need. We understand how important it is to receive your order as quickly as possible.
In most cases Tamerx Diesel Products only needs one address, as long as your product is shipping to the same location as your billing information. In order to eliminate credit card fraud, your billing information must match the credit card you provide.
The terms, conditions, and details of our warranty vary from product to product. Specific warranty details can be found below.
Tamerx Diesel Products provides a replacement warranty on all of our parts. The duration and mileage limitations of the warranty vary by product and are specified on the product's detail page/item listing.
Please note that the warranty covers replacement of the part and the cost of shipping the replacement part to you only. It does not cover any shop, labor, towing, or any similar or related costs. This is not a "money back guarantee".
If you experience a problem with your part or it is not functioning properly, the correct warranty procedure is to call us at (510) 257-1777 (8:00 AM - 5:00 PM ET Monday through Friday). Be sure to have your order number and/or other relevant order information ready so we can easily locate your order and resolve your issue as quickly as possible. From that point, we will review with you any troubleshooting steps that may need to be taken and other areas or systems that can be checked to rule out external problems contributing to your part's issue. If a replacement is determined to be necessary, we will then arrange for your replacement part to ship out ASAP and issue any necessary return shipping labels and/or documents.
As is the case for the majority of the diesel products sold on Tamerx Diesel Products, your part's warranty is active as soon as you install it. In some other cases, warranty activation is contingent upon you sending us your core (i.e., your old part). Tamerx Diesel Products will provide you a return shipping label for parts that have a warranty with a core return condition. When we have received your core return, the part's warranty coverage begins. We reserve the right to void the product warranty if your core is not received within the allotted time, or if it isn't received at all. If the warranty for the diesel part you are purchasing has a core return requirement, it will be clearly noted on the product detail page/item listing.
What is a Core Charge?
A core charge (also called "core deposit") is similar to the deposit you might pay for a can or bottle of soda and is a standard requirement in the auto parts industry. For example, in many states, to promote recycling, you pay a deposit when you purchase a can of soda and receive your deposit back when you return the empty can. Many automotive parts have a core charge, or core price, that works in essentially the same way as a soda can deposit.
30 Day Core Charge Hold
You authorize Tamerx Diesel Products, to hold your credit card for the specified core charge amount and that you agree to return your core with 30 days of receiving the purchased part. When we have received your core return, the hold is released and the core charge payment is canceled.
"This Product Doesn't Have a Core"
Built to meet the needs of transit fleets, the Gillig Cummins Jumper Harness OEM 82-86388-000 provides secure electrical connections for buses powered by Cummins engines. This OEM-certified component is designed to exact specifications, ensuring proper fit and dependable functionality in demanding service environments. By linking critical engine and emissions system components, it helps maintain consistent vehicle operation and reliability. Its rugged construction is engineered for durability, withstanding the heavy-duty conditions of daily bus routes. For operators and maintenance teams, this jumper harness offers the assurance of long-lasting performance and OEM-backed quality.
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The jumper harness is a short, purpose-built electrical cable assembly that bridges sensors, control modules, and emission components. It ensures signals travel reliably in demanding engine environments. Below are its main parts:
Core Components
- Wire Conductors / Core Wires
- The electrical wires (multi-strand copper or similar) that carry signals (sensor data, voltage, grounds) between components.
- Connector Plugs / Terminals
- Delphi WPT-3 & WPT-4 Connectors
- This harness uses Delphi WPT-3 and WPT-4 style plugs that mate with matching ports in the DEF system or control modules.
- The electrical wires (multi-strand copper or similar) that carry signals (sensor data, voltage, grounds) between components.
- Pin Contacts / Female & Male Terminal Pins
- The metal contacts inside the connectors that make electrical contact with counterpart plugs.
- Insulation & Sheathing
- Each wire has insulation to prevent short circuits, and the bundle is sheathed in protective outer jacket or loom to protect against abrasion, heat, chemicals, and vibration.
- Strain Relief / Boots
- Rubber or plastic boots or grommets at connector ends to reduce stress on wires, seal out moisture, and prevent bending fatigue.
- Locking Clips / Retention Features
- Clips or latches that hold the connectors securely together and prevent accidental disconnection under vibration.
- Shielding / Grounding (if applicable)
- In some designs, a foil or braided shield around the wires may reduce electromagnetic interference (EMI), especially in sensitive signal runs.
- Junctions or Splice Points (optional)
- If the harness taps multiple sensors or branches, it may contain splice connectors or junction terminals.
This jumper harness serves as a critical link in the wiring network of the DEF / emissions control system. It ensures data, voltage, and sensor signals can flow reliably between modules, under heat, vibration, and harsh conditions.
A jumper harness is a crucial electrical connector that links key systems together. If it begins to fail, it can cause intermittent electrical issues that are often hard to track down. Spotting the warning signs early helps prevent bigger problems down the road.
Common Signs of a Failing Jumper Harness
Watch for these indicators that your jumper harness may be going bad:
- Intermittent electrical faults,
- such as warning lights that flicker on and off
- Loose or corroded connections
- visible on inspection
- Wiring damage,
- including cracked insulation or exposed copper
- Loss of communication
- between connected components
- Burnt smell or heat marks
- near connectors, indicating overheating
- Moisture intrusion,
- leading to rust or green corrosion on pins
A failing jumper harness disrupts the flow of electrical signals. This can cause sensors to misread, warning systems to malfunction, or even result in total system failure if left unchecked.
If you notice these warning signs, it’s important to inspect and replace the jumper harness as soon as possible. Early action prevents costly breakdowns and keeps your vehicle’s electrical systems working reliably.
It ensures uninterrupted electrical connections for engine sensors and control systems.
Yes, faulty wiring may lead to communication errors and reduced system reliability.
Intermittent faults, electrical shorts, or engine error codes may point to harness issues.
They check continuity, inspect connectors, and test voltage flow across the harness.
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