New to this board, so please bear with me. I have been studing the wiring diagram for my 2017 SX210 and unless the Yamaha kit changes the wiring at the starter relay, there is really no "start" battery or "house" battery. This also clarifies the fact that you can select battery #1 and everything on the boat works, as does everything on battery #2.. Dual Battery Wiring Yamaha 242 Jet Boat, this is how the battery cables should be connected to dual batteries for proper operation.Deep Cell Batteries - http.
![[DIAGRAM] Yamaha Boat Wiring Diagram Hecho](https://www.in-depthoutdoors.com/wp-content/uploads/2016/03/Boat-Wiring-2016-1.jpg "[DIAGRAM] Yamaha Boat Wiring Diagram Hecho")
![[DIAGRAM] Wiring Diagram For Boat Dual Battery System](https://s3-ap-southeast-2.amazonaws.com/fishraider-ips-assets/monthly_2018_12/1519404654_Dualbatterywiringdiagram.jpg.2ff55d3fdae80734bf1ee4e28a65713e.jpg "[DIAGRAM] Wiring Diagram For Boat Dual Battery System")
Yamaha Jet Boaters This is a Message Board for all Yamaha Jet Boat Owners and other interested parties. Click on LOGO to go to the HOMEPAGE. FAQ:. Post subject: Re: Dual Battery wiring diagram, redux. Posted: Mon Apr 14, 2008 2:49 pm . Joined: Thu Jan 17, 2008 4:59 am Posts: 118. Battery Diagram - 242 X. Thread starter mraz72; Start date Jun 1, 2018; 1; 2; Next. 1 of 2 Go to page. Go. here is my battery wiring. Julian Jetboaters Fleet Admiral 2* Staff member. Administrator. Messages 18,637. Producer of "The Wake Wedge" for Yamaha jet boats. www.wakewedge.surf Dealer for: FatSac Contact me for pricing or custom.