Mercury – Quad Engine LCM Zero Effort Kit | Legacy Control Module | 84-8M0169311

Overview
This kit lets older quad-engine Zero Effort Controls run on the newer Digital Throttle and Shift harnessing without rebuilding the whole helm. It keeps the controls feeling the way you're used to, but the system behaves more predictably once it’s tied into modern wiring. With four modules and the harness included, the rigging stays cleaner instead of turning into a pile of mismatched cables. It’s a straightforward way to bring a big four-engine setup up to date.

Key Features
    • Quad Legacy Control Modules – Allows older Zero Effort Controls to work with Next Gen DTS.
    • Quad Engine Design – Built for four-engine configurations.
    • Included Harness – Provides the wiring path for all four modules.
    • Digital System Integration – Connects legacy throttle hardware to current DTS rigging.
    • Additional Harness Required – Key switch harness must be purchased separately.

Engine & Boat Compatibility
    • Zero Effort Controls
    • Next Gen Digital Throttle and Shift
    • Quad engine layouts

Performance & Practical Benefits
Once everything’s tied together, the four engines tend to react with the same pacing instead of drifting apart. Dockside handling gets a little less chaotic because each throttle command lands in a cleaner digital path. The rigging stays easier to work around, and tracking down issues doesn’t turn into an afternoon of chasing wires. The whole helm ends up feeling steadier and less stressful on long offshore runs.

Why Buy OEM
OEM modules keep the digital communication steady so each engine responds the way it should. The parts fit cleanly and are built to handle heat, vibration, and long seasons of use. You’re not gambling on sketchy wiring or mixed-fit connectors down the line.

FAQ
Q1: How do I know I need this kit?
A: If you’re keeping quad Zero Effort Controls but moving to Next Gen DTS wiring, this is the kit that ties everything together.

Q2: Does anything need calibration after installation?
A: No—DTS handles its own setup once you plug everything in.

Q3: How does it do in saltwater?
A: As long as you rinse and check your rigging now and then, it holds up well.

Q4: Any installation notes?
A: Grab the key switch harness ahead of time—it’s required to finish the job.

Q5: What are early signs something’s off?
A: Uneven throttle behavior or digital responses cutting in and out usually show up first.