Tim in MD
Jet Boat Addict
- Messages
- 47
- Reaction score
- 60
- Points
- 97
- Location
- Bush River, Aberdeen, MD
- Boat Make
- Yamaha
- Year
- 2019
- Boat Model
- AR
- Boat Length
- 21
I've looked through a few dozen threads on battery wiring, and can't find the answer I need. I can see how factory two-battery setups on 24-footers are set up, but they have a starting battery and a house battery - I don't think that's my situation. Full disclosure: when I winterized the boat last fall, I didn't take a picture of the battery wiring - no idea why, but it may relate to idiocy.
At any rate, I had the dealer install a second battery and a switch on my 2019 AR210 when I bought it last summer. The batteries are identical, and there is not a "starting" battery - they can be used interchangeably depending on the switch position, and even with the switch in the off position, the bilge pump is always live. Now I'm reinstalling the batteries, and I'm struggling with all the wires. Pictures are attached.
The dealer nicely labeled two red wires #1 and #2 coming from the switch, and two black wires Ground #1 and Ground #2 (can't really tell where they're coming from). Very nice, so I attached them to what I arbitrarily call batteries 1 and 2 - I think I got that part right. Then there's more cables.
There are two thick black cables - one each from a lug on the back of each engine - I'll call them engine grounds. There's a small gauge black wire coming from the battery switch. And, then there's a loose 8 gauge cable, about a foot long, lying in the battery compartment.
So, the questions:
1) Where do the two engine grounds get attached? Both to one battery, or one to each battery? If the latter, does it matter which battery gets which engine ground?
2) Does it matter which battery the small switch ground gets attached to?
3) Do I use the loose cable to attach the two battery grounds together?
Thanks for any info! I hope to take the boat for a spin tomorrow, but don't want to fry my electronics.
At any rate, I had the dealer install a second battery and a switch on my 2019 AR210 when I bought it last summer. The batteries are identical, and there is not a "starting" battery - they can be used interchangeably depending on the switch position, and even with the switch in the off position, the bilge pump is always live. Now I'm reinstalling the batteries, and I'm struggling with all the wires. Pictures are attached.
The dealer nicely labeled two red wires #1 and #2 coming from the switch, and two black wires Ground #1 and Ground #2 (can't really tell where they're coming from). Very nice, so I attached them to what I arbitrarily call batteries 1 and 2 - I think I got that part right. Then there's more cables.
There are two thick black cables - one each from a lug on the back of each engine - I'll call them engine grounds. There's a small gauge black wire coming from the battery switch. And, then there's a loose 8 gauge cable, about a foot long, lying in the battery compartment.So, the questions:
1) Where do the two engine grounds get attached? Both to one battery, or one to each battery? If the latter, does it matter which battery gets which engine ground?
2) Does it matter which battery the small switch ground gets attached to?
3) Do I use the loose cable to attach the two battery grounds together?
Thanks for any info! I hope to take the boat for a spin tomorrow, but don't want to fry my electronics.
