Wireing 2 12volt batteries into boat via isolatorswitch

If you have more then one get a 1 -2- off both switch it allows you to keep a battery in reserve and a battery charger balance switch. ( not the proper name ) it allows the device to choose to charge the lowest battery automatically.

Lee,
No such animal exists. They are not wired via a diagram at the factory. Your best bet is a simple light up circuit tester which are only a couple bucks at places like Harbor Freight. All auto stores will have them as well. Then just follow the wiring from each component switch (turned on) to any splices, fuse panel, etc. and see where it is powered and where it is not. You should be able to isolate it. Since you have 3 components not working, I would start at junctions where multiple wires connect such as Ground, fuse panel, behind dash, etc.

Hi Jim:
I'm confused.
Raise or lower motor sounds like a boat outboard leg.
Cars and trucks section???????????
I'm guessing that you first need to confirm that the battery is fully charged.
Just an idea, but boats often have an isolation switch that has to be turned on before power is available to the engine. Follow the positive lead from the battery.
Please reply as a comment to this post so I can try to assist.
Cheers

if it is just the one battery, put the isolator on the ground wire
if the ground wire is turned off by the isolator , there is no circuit

See this link:
Custom Marine Services Quick Source Installation Help Marine Battery Chg...

Custom Marine Services Quick Source Installation Help Marine Battery Chg...

Custom Marine Services Quick Source Installation Help Marine Battery Chg...

Sorry for the delay. I don't understand why they have the third "on/off" switch. Normally on a boat like yours, the set would be as follows :
Each pair of batteries would be jumped together to make a single large bank. We can then consider them "bank 1" and "bank 2" usually they will correspond to port and starboard.
Now you will take the positive lead from bank 1 and connect it to B1 on the port switch and then jumper it to B1 on the starboard switch.
You will do the same for bank 2 and the starboard switch.
The "common" on each switch will be your positive output to the motors corresponding them to port and starboard.
Now you can run your port motor with the port switch selected to battery 1 and the starboard motor with the starboard switch selected to battery 2.
Your emergency parallel is already built in. If battery bank 1 dies, you can start both engines with battery bank 2 and vice versa. Putting the switche(s) to the "all" position will allow you to start/run the engine(s) form both banks at once.
You can use the third switch to supply the "house" system. Take its power feed from the "common" terminal on either of the battery switches. In this way you can isolate which battery bank you use to draw power from for all of your accessories so there is no fear of you running a battery bank dead and being stranded. For example if your house feed is connected to the port battery switch and you have the port battery switch selected to bank 1 (port bank), should you run the battery dead listening to the radio you can simply start the starboard engine and then select "all" on the port switch. Now the starboard engine will be charging the port battery bank, bringing the house system back to life and allowing you to start the port engine.
In order for the system to work it is important that all of the battery and engine grounds be connected together in a central point (a common buss bar).
Dont forget that you cannot switch battery switches while the engines are running.
Good Luck!

hello!Most ep boats need to be in water in order for it to run.you say te model is 7000 ,who makes it? NQD....?