What are the specs for this Wiring Harness?

The correct replacement for Goodman model GMT140-5 Furnace — 0259F00007P is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your Goodman equipment which lists the model number GMT140-5 Furnace — 0259F00007P.

What symptoms indicate I need a new wiring harness?

Common symptoms that indicate you need a new wiring harness include unusual noises, intermittent operation, complete failure to operate, or visible damage. For specific diagnostic guidance, visit nationalhvacparts.com/pages/hvac-diagnostic.

Is this wiring harness compatible with Bryant or Payne systems too?

Many Goodman parts are cross-compatible with Bryant and Payne systems since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across multiple brand labels with different model numbers. To verify cross-compatibility, check your Bryant or Payne equipment service manual for cross-compatible part numbers, or contact info@nationalhvacparts.com with your model number for confirmation.

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Goodman

OEM Goodman 12-Pin Wiring Harness for GMT140-5 Furnace — 0259F00007P

Name: OEM Goodman 12-Pin Wiring Harness for GMT140-5 Furnace — 0259F00007P
Brand: Goodman
SKU: GOODMAN-12461
Price: 29.95 USD
Availability: InStock

SKU: GOODMAN-12461 Brand: Goodman

$29.95 $38.95

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The OEM Goodman 0259F00007P 12-pin wiring harness is a direct-fit replacement for GMT140-5 gas furnaces. It carries the low-voltage and control signals between the integrated furnace control board and the furnace components, using factory-keyed connectors so there is no guesswork during installation. Replacing a burned, chafed, or corroded harness restores reliable communication and clears intermittent no-heat faults.

Specifications

Connector: 12-pin, factory keyed
Function: Control board / component interconnect harness
Wiring: Color-coded OEM conductors with crimped terminals
Fits: Goodman GMT140-5 furnace
OEM Part Number: 0259F00007P

OEM vs. Generic

The genuine Goodman harness uses the correct pin-out, wire gauge, and connector housing so it seats fully into the control board on the first try. Generic or hand-built harnesses risk mismatched pin assignments and loose terminals that lead to erratic operation or melted connectors. For control wiring, OEM is the safe choice.

Install Difficulty

Moderate (3/5) — Power down the furnace, photograph the existing connections, then unplug the keyed connectors and route the new harness along the same path. Plan for 20–30 minutes. Take care to seat every connector fully until it clicks.

Shipping Information

Orders placed before 3PM CST ship same business day
Standard delivery: 2-5 business days
Express shipping available at checkout
Free shipping on orders over $75
Tracking number emailed upon shipment

Return Policy

30-day returns on unused parts in original packaging
Electrical parts (capacitors, contactors, control boards) are final sale once installed
Email info@nationalhvacparts.com to initiate a return
Refunds processed within 5-7 business days

OEM Goodman 12-Pin Wiring Harnes...

$29.95

Frequently Asked Questions

Does this Wiring Harness fit my Goodman GMT140-5 Furnace — 0259F00007P?

Yes. This is the factory-specified OEM wiring harness for the Goodman GMT140-5 Furnace — 0259F00007P. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.

How do I replace the wiring harness on my Goodman GMT140-5 Furnace — 0259F00007P?

Refer to your equipment service manual for model-specific steps. General approach: turn off power, photograph connections, remove old part, install new part, restore power and test. For gas components, hire a licensed technician. Email info@nationalhvacparts.com for guidance.

What symptoms mean I need a new wiring harness?

Common symptoms: unusual noises, intermittent operation, complete failure, or visible damage. Visit our diagnostic hub for symptom-based troubleshooting.

Is this wiring harness compatible with Bryant or Payne too?

Many Goodman parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.

Should I use OEM or aftermarket for my Goodman wiring harness?

OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.

How fast does National HVAC Parts ship?

Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.

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