Mercury – TVM Harness (No Rig) | Rigging Accessory | 8M0191737

Overview
This TVM harness is the missing link for setting up electric steering on 250–300 HP V8 Verado engines, whether you’re running Joystick Piloting or a non-joystick electric-steering setup. It gives each actuator its own clean connection so the system can run the way it’s designed to. The harness keeps the wiring simple and avoids the headaches that come from trying to adapt pieces that weren’t meant for the job. Once installed, steering response usually feels steadier and more natural.

Key Features
 • Electric Steering Harness – Provides the required link for V8 Verado electric steering.
 • Works With or Without Joystick – Supports both JPO and non-joystick setups.
 • One Per Actuator – Each actuator uses its own harness.
 • V8 Verado Ready – Designed specifically for 250–300 HP Verado models.
 • OEM Marine Wiring – Built to handle vibration, spray, and routine use.

Engine & Boat Compatibility
 • 250 HP Verado
 • 300 HP Verado
 • Electric steering actuators
 • Joystick Piloting and non-joystick setups
 • SmartCraft network

Performance & Practical Benefits
With the right harness in place, the actuator gets a clean, steady signal—which you’ll feel in tighter turns and slow docking moves. The wiring path stays simple and avoids awkward splices or stretched sections. As a result, the overall steering feel is calmer and more predictable, especially at idle or when working around docks.

Why Buy OEM
OEM harnesses plug in cleanly, resist corrosion, and hold up to real marine conditions. They’re built to work with Mercury’s calibration and controls, so you avoid random electrical issues and mismatched connectors.

FAQ
Q1: How do I know if I need this harness?
A: If you’re rigging electric steering on a 250–300 HP V8 Verado—joystick or not—this is the required harness.

Q2: Do I need one or multiple harnesses?
A: One per actuator. No sharing.

Q3: Is it okay for saltwater boats?
A: Yes—just keep connectors clean as part of normal washdowns.

Q4: Anything to check before installing?
A: Make sure the wiring path isn’t tight or rubbing against sharp edges.

Q5: What if steering still feels off after installing?
A: That usually means calibration or another wiring issue, not the harness.