What are the specs for this Wiring Harness?

The correct replacement for Goodman model AMH80903BNAC Furnace — 0259F00018 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 AMH80903BNAC Furnace — 0259F00018.

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 AMH80903BNAC Furnace — 0259F00018

Name: OEM Goodman 12-Pin Wiring Harness for AMH80903BNAC Furnace — 0259F00018
Brand: Goodman
SKU: GOODMAN-5714
Price: 23.95 USD
Availability: InStock

SKU: GOODMAN-5714 Brand: Goodman

$23.95 $30.95

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Goodman 0259F00018 12-Pin Wiring Harness

The 0259F00018 is a genuine OEM 12-pin wiring harness built for the Goodman/Amana AMH80903BNAC gas furnace. This harness connects the integrated furnace control board to the furnace's key components — routing low-voltage and line-voltage signals through a single keyed 12-pin plug for fast, error-free service. It is the correct replacement when connectors are melted, corroded, or a rodent has damaged the original wiring.

Specifications

OEM Part Number: 0259F00018
Part Type: 12-pin wiring harness
Connector: Keyed 12-position plug
Compatible Model: AMH80903BNAC
Function: Control board interconnect harness

OEM vs. Generic

The OEM 0259F00018 is pre-terminated with the correct wire gauges, colors, and pin-out so it plugs directly into the AMH80903BNAC control board — no splicing or guesswork. Building a harness from generic connectors risks miswiring and control-board damage. The OEM harness is the safe, code-compliant choice.

Install Difficulty

Moderate (2/5) — Disconnect power, photograph existing connections, unplug the 12-pin connector, and route the new harness along the same path. Basic electrical familiarity helps. About 20–30 minutes.

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...

$23.95

Frequently Asked Questions

Does this Wiring Harness fit my Goodman AMH80903BNAC Furnace — 0259F00018?

Yes. This is the factory-specified OEM wiring harness for the Goodman AMH80903BNAC Furnace — 0259F00018. 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 AMH80903BNAC Furnace — 0259F00018?

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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