What are the specs for this Wiring Harness?

The correct replacement for Goodman model GMTH090-5 — 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 GMTH090-5 — 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 GMTH090-5 — 0259F00007P

Name: OEM Goodman 12-Pin Wiring Harness for GMTH090-5 — 0259F00007P
Brand: Goodman
SKU: GOODMAN-12564
Price: 44.95 USD
Availability: InStock

SKU: GOODMAN-12564 Brand: Goodman

$44.95 $59.95

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Texas CMBL #19328542014

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The Goodman 0259F00007P 12-Pin Wiring Harness is a genuine OEM connector assembly for the GMTH090-5 gas furnace. This pre-terminated harness links the control board to the furnace's motors, sensors, and safety switches through a keyed 12-pin plug. Damaged, melted, or corroded harness pins cause intermittent faults, no-heat calls, and blower or ignition issues that are easily mistaken for a failed control board.

Specifications

Part number: 0259F00007P
Connector: 12-pin keyed plug
Type: Pre-terminated OEM wiring harness
Brand: Goodman (OEM)
Application: GMTH090-5 gas furnace
Includes: Factory-crimped leads and connector housing

OEM vs. Generic

Because this harness carries both low-voltage control signals and line-voltage loads, pin spacing, wire gauge, and connector keying must match exactly. A generic or hand-spliced harness risks loose connections, arcing, and nuisance faults. The genuine Goodman 0259F00007P plugs straight in with factory-grade crimps and correct polarity.

Installation

Difficulty: Moderate. Disconnect furnace power, unplug the old harness from the control board and each component, then route and reconnect the new harness following the original path — the keyed connector prevents backwards insertion. Label any secondary connections before removal. Plan on 30–45 minutes; if you're not comfortable tracing furnace wiring, have a licensed HVAC technician handle it.

Exact-fit replacement that restores reliable furnace communication.

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...

$44.95

Frequently Asked Questions

Does this Wiring Harness fit my Goodman GMTH090-5 — 0259F00007P?

Yes. This is the factory-specified OEM wiring harness for the Goodman GMTH090-5 — 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 GMTH090-5 — 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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