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2020 AR 210 Battery Wiring

HangOutdoors

Jetboaters Fleet Admiral
Messages
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502
Location
Royal Oak, MI
Boat Make
Yamaha
Year
2020
Boat Model
AR
Boat Length
21
I have ran all the wiring for the tabs, fuse blocks, Garmin, vapor alarm, second bilge and high water alarm. Wanted to drop in original battery and test a few things so I can get on the lake tommorrow and do some more testing.

Anyhow, before i add the second batterry and such I want to test.

I cant find my picture of the Battery hookup when I removed it last fall.

5 wires, three are labeled house, and ground 1 and ground 2, but two are un labeled.

Not sure if the are grounds or hot. Anyone know?

20210424_133158.jpg
 
I believe those are the engine grounds, so red to red all the rest black, i think. Found an old thread.
 
Looks like you have 3 wires labelled as ground... I believe you'll have a ground for each engine, one for the rest of the systems and maybe another for the bilge pump?

Can you trace the positives from the battery switch?
 
2 are labeled ground and 1 is house. The other two black I am pointing to one each goes to each engine on the back side see blue circles in picture.

yamaha-2478698.jpg
 
2 are labeled ground and 1 is house. The other two black I am pointing to one each goes to each engine on the back side see blue circles in picture.

View attachment 147752
Those are ground cables to each engine. Yamaha does a good job of either using red cable or wrapping the loom with red tape to indicate positive.
 
Yes I concur, engine grounds - don't forget boats are fiberglass so they don't have common grounds like vehicles so everything needs a positive and ground wire.
 
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