Mercury – GPS Extension Cable | 6.6-Foot CAN P Line | 84-879171T22

Overview

Some boats need a little more room to place the GPS antenna where it actually gets clean sky. The Mercury 84-879171T22 Extension Cable adds 6.6 feet of length to the GPS line used with the 8M0024918 kit, giving you the flexibility to route the antenna to a better spot without fighting tight bends or short harness runs. It’s made for CAN P GPS systems on boats without an Auto Pilot module, and once connected, the system simply continues passing GPS data without any setup or drama.

Key Features

• 6.6-Foot Extension – Provides extra length for longer or more complex rigging paths.
• CAN P GPS Signal – Carries the dedicated GPS feed used on non-Auto Pilot installations.
• GPS Kit Ready – Built specifically for the 8M0024918 GPS Kit.
• OEM Connectors – Uses factory-style ends for a clean, direct plug-in connection.
• Reliable Signal Path – Maintains steady GPS communication across the added distance.
• Flexible Cable Routing – Easy to run through tighter spaces or around layout obstacles.

Compatibility

• GPS Kit 8M0024918
• CAN P GPS signal systems
• Boats without Auto Pilot modules

Performance & Practical Benefits

This extension cable lets you mount the GPS antenna where it works best without forcing awkward routing or stretching the original harness. The added length is especially helpful on larger consoles, wider transoms, or layouts where the cleanest mounting point is just out of reach. Once installed, the GPS feed stays stable, speed readings remain smooth, and position data stays accurate. It’s a simple cable that solves a very common rigging challenge.

Why Buy OEM

GPS wiring needs solid shielding and tight connector tolerances to keep the signal clean. Mercury’s OEM extension cable maintains that standard, avoiding the dropouts or noise issues that cheap aftermarket extensions often introduce. With the OEM version, the system communicates reliably and holds up to vibration, heat, and long-term marine use.

FAQ

Q1: When would I need the 6.6-foot extension instead of the shorter one?
If the antenna needs to reach a higher mount point or a distant console location, this longer extension gives you the extra room.

Q2: Does adding this cable reduce GPS accuracy?
No. It’s designed to carry CAN P data cleanly across this length.

Q3: Can this be used on a boat with Auto Pilot installed?
No. It’s intended for GPS setups that do not include an Auto Pilot module.

Q4: Is the cable flexible enough for tight rigging areas?
Yes. It’s slim and easy to snake through narrow spaces.

Q5: Does anything need to be reset after installation?
Nothing needs to be reset. Once connected, the GPS signal continues normally.