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Need help installing 6Y8-0E83R-81-00 Command Link tach kit

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Need help installing 6Y8-0E83R-81-00 Command Link tach kit

Old 11-29-2017, 04:15 PM
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Default Need help installing 6Y8-0E83R-81-00 Command Link tach kit

Have a few questions. I bought the kit but it came with nothing as far as installation instructions or schematic. The engine I'm connecting to is a new 2017 F70. The boat is an open 18' aluminum Tracker Grizzly 1860 MVX, with a small side console, using the Yamaha side mount control box (new) with intergral key switch. I only need about an 8' wire harness between the Gage and the engine and the gage and control box are less than 2' apart. I have limited space to be able to route and stow all this wiring.

The harnesses furnished in the kit are excessively long and necessitate multiple connections (the adapter "hubs") that are poorly weathersealed.
Questions I have:
1. The 6Y8-82521-51-00 Harness (12' long, 4 wire, blue, white, black and red) will connect to the command link connector under the engine hood, the other end of the harness has a connector that will plug into the back of the gage. On this harness, why couldn't I cut the black and red wires at the gage end connector and connect them to the yellow and black wire pigtail from the control box (key switch) ? I could strip the harness jacket back to get as much length of the black and red wires as I need. (This would take negate the need for the 6Y8-82521-01-00 Harness (1' long), the 6Y8-82553-60-00 Harness (14' long, 2 wire, orange), the 2 Adapter Hubs, and the 6Y5-83553-N0-00 Harness (~10' long , multi-wire w/ 2 fuses).
2. How do I run the new wire harness thru the bulkhead where the throttle & shift cables enter into the engine hood area? (there is no available penetration, do I need to cut/drill one ?)

Thanks for any help with this from Yamaha rigging "experts".
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Old 11-29-2017, 05:37 PM
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Originally Posted by edgarJ View Post
The 6Y8-82521-51-00 Harness (12' long, 4 wire, blue, white, black and red) will connect to the command link connector under the engine hood, the other end of the harness has a connector that will plug into the back of the gage. .
it will connect, yes, but the gauge will not work.
What you need to do is create a NMEA 2000 backbone - using Yamaha's proprietary hardware.
Those "Adapter hubs" are the terminating resistors for the NMEA network - they are necessary - one at the engine end, the other at the gauge end, with the bus harness 6Y8-82553-60-00 in between them.

You also don't want to power the gauge without fuses - hence that harness.

Certainly the 12' 6Y8-82521-51-00 is excessive - seems you would be fine with a 6Y8-82521-01-00 at each end.

But you certainly could cut, shorten and (waterproof) splice the harnesses as you see fit.


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Last edited by Fwpratt; 11-29-2017 at 05:45 PM.
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Old 11-29-2017, 07:00 PM
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Awesome Fwpratt - just the info I was looking for. I'll probably cut & shorten the 12' 6Y8-82521-51-00 (I could canabalize the wire from it and use it for other misc circuits). Also, I'll probably not use the 6Y5-83553-N0-00 Harness - probably just splice a fuse into the yellow wire coming off the 6Y8-82553-60-00 Harness and plug it straight to the yellow wire on pigtail hanging from my side mount control box.
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