Wicked Wrench Pro-Series Gen V Jeep JK/JKU Integration Harness

🔧 Custom built to order. Allow 5–6 weeks for production before shipping.

The ultimate standalone plug-and-play wiring solution to bring Gen V LT automatic power to your 2012+ Wrangler.

Swapping a modern GM Gen V direct-injection V8 into a 2012–2018 Jeep Wrangler JK/JKU used to mean dealing with incomplete wiring, unreturned tech calls, or sacrificing your core dashboard functionality. The Wicked Wrench Pro-Series Integration Harness solves the heavy lifting. Fully engineered, built, and rigorously tested in the USA, this premium harness delivers a clean factory-level bridge between your new automatic GM powertrain and your Jeep's factory network.

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⭐⭐⭐⭐⭐ What Builders Are Saying

"Absolutely transformed the Jeep to enjoy driving. 6.2 Denali and the LT2 intake push the 40s and the heavy 4-door no problem."
— Keith W. ✅ Verified Customer

"By far one of the best upgrades you could ever do to your Jeep Wrangler is swap out the underpowered drivetrain for a Gen V GM platform. Great service, extensive knowledge, extremely professional."
— Mountainless MTB ⭐⭐⭐⭐⭐ Verified Customer

"They promptly shipped my parts. Incredibly knowledgeable and willing to assist. Great people."
— David S. ✅ Verified Customer

"Knowledge on all gen 5 and square body conversion. Helped me with the set up I need for my 81 Jimmy."
— Midtown Roofing ⭐⭐⭐⭐⭐ Verified Customer

"Was a huge help! I'm building a massive 30+ inch lifted SAS truck. Always answered my questions and had some parts laying around he helped me with. Really great guy and huge help."
— DustAllDay ⭐⭐⭐⭐⭐ Verified Customer

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🧩 Factory Integration Breakdown

We believe in 100% transparency so you can plan your build accurately. Our integrated module retains your core factory comfort and diagnostic features while dropping the highway fluff you don't need:

• Full Factory Gauge Support: Your factory speedometer, tachometer, fuel, oil pressure, and water temperature gauges work perfectly right on your dash cluster.
• Total Comfort Control: Full factory air conditioning integration utilizing modern safety cutoffs based on automatic GM RPM and pressure metrics.
• Off-Road Ready: Keeps your factory ABS, cabin accessories, power windows, and electronics fully powered and operational.
• What is Deleted: To streamline the swap electronics, you will lose traction control (perfect for the trail anyway!), factory cruise control, and steering wheel-mounted menu/audio controls.

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🔧 Automatic Transmission Setup Options

Select your transmission options from the dropdown menu above before adding it to your cart. Pricing starts at $2,400.00 and varies depending on your chosen drivetrain setup. All configurations are pinned and mapped for factory-level electronic shifting and safety interlocks:

• GM 6L80 6-Speed Automatic Setup
• GM 8L90 8-Speed Automatic Setup
• GM 10L80 10-Speed Automatic Setup

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📝 Product Details & Compatibility

• Wrangler Support: Designed specifically for 2012–2018 Jeep Wrangler JK and JKU (4-door) automatic chassis configurations. (Note: 2007–2011 support is currently unavailable due to module manufacturing updates).
• Engine Mapping: Pinout engineered for modern GM Gen V LT-based V8 powerplants (5.3L L83/L84 or 6.2L LT1/L86/L87/L8T/L8P configurations).
• ⚠️ Critical Controller Note: L84, L87, L8T, and L8P engine setups will require an E92 ECM alongside a T87, T87A, or T93 TCM, depending on your specific drivetrain configuration.
• Build Quality: Assembled with high-grade, heavy-duty TXL automotive wire, an integrated weather-pack fuse block, and clean factory-style loom protection.
• Lead Time: Custom built to order. Standard production and delivery time is approximately 5 to 6 weeks.

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🛑 Crucial Order Information & Return Policy

Because every Jeep integration harness is a highly complex component built specifically around your exact rig's specifications:

• Valid Phone Number Required: You MUST provide a valid, active phone number at checkout.
• The Pre-Build Review: Our team will personally call you to go over your complete engine, transmission, and model-year setup details before a single wire is cut.
• Strict Policy: Because these are highly specialized, custom-built-to-order electronics, there are absolutely no returns, refunds, or cancellations allowed once production on your harness begins. Please ensure all your project details are accurate during our confirmation call.

• ⚠️ Critical 10-Speed Electronic Compatibility Warning

  If you are configuring your build with a GM 10-Speed Automatic Transmission, you must verify your engine's fuel system sensor configuration before installation:

  • The 3-Wire Requirement: The 10-speed transmission electronics MUST receive data from a 3-wire Gen V engine setup.
  • The 4-Wire Conflict: If your donor engine uses a 4-wire setup, the vehicle may start and run, but the 10-speed transmission will either fail to operate entirely or experience severe, unpredictable shifting malfunctions due to data mismatch.
  • The Fix: If you have a 4-wire donor engine, you must swap out the fuel pressure sensor and the sub-harness located directly underneath the intake manifold to a factory GM 3-wire configuration before firing up the vehicle.

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⚙️ Need the Mounts & Hardware? If you haven't sourced your mechanical installation parts yet, make sure to pair this wiring with our Wicked Wrench Jeep JK/JKU Gen V Engine Swap Install Kit ($1,050.00) to get your heavy-duty engine mounts, transmission adapter plate, fuel lines, and pedal mounts all in one shot.

💳 Don't delay your build. Select Shop Pay at checkout to split this premium integration harness into low, interest-free monthly installments.