Mercury – Trim Adapter (8-Pin to 3-Pin) | Trim Harness Converter | 84-8M0163380

Overview
This adapter gives you a simple way to connect a 3-pin trim switch or trim device to an 8-pin trim harness. It’s a small plug-in piece that saves you from cutting wires or trying to build your own jumper. If you’re mixing older trim parts with newer rigging—or you’re adding a trim switch that doesn’t match the existing connector—this adapter keeps the wiring clean and makes the trim function behave the way it should.

Key Features
    • 8-Pin to 3-Pin Adapter – Lets a 3-pin trim device plug into an 8-pin harness.
    • Drop-In Connection – No splicing or custom wiring needed.
    • OEM Connectors – Factory ends that lock in securely.
    • Small Footprint – Easy to tuck behind panels or in tight rigging spots.
    • Clean Signal Path – Helps trim respond smoothly and consistently.

Engine & Boat Compatibility
    • Digital Throttle and Shift
    • 8-pin trim harnesses
    • 3-pin trim switches and accessories

Performance & Practical Benefits
Using the right adapter keeps the trim signal steady instead of fighting mismatched wiring. That means trim adjustments feel more natural when you’re finding the sweet spot in chop or getting on plane. The wiring stays neat too, which makes troubleshooting later on a lot less stressful.

Why Buy OEM
OEM pieces fit the way Mercury designed them to. The connectors stay tight, the signal stays clean, and the harness holds up to heat, spray, and vibration—something off-brand adapters usually can’t match.

FAQ
Q1: When would I use this adapter?
A: Whenever you need to hook a 3-pin trim control into an 8-pin DTS trim harness.

Q2: Any setup or programming needed?
A: Nope—plug it in and trim works as normal.

Q3: Saltwater friendly?
A: Yes. A quick rinse now and then helps keep the connector clean.

Q4: Any install tips?
A: Leave a little slack and keep it clear of sharp edges so the harness doesn’t rub.

Q5: What are early signs of wear?
A: Slow trim response, intermittent signals, or a connector that feels loose.