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Author Topic:   Accessory Switch Wiring
Andrewdavis34 posted 05-03-2008 06:55 PM ET (US)   Profile for Andrewdavis34   Send Email to Andrewdavis34  
Hi All. I am trying to figure out how to wire my bait tank into the accessory switch without tapping directly into the hot leads. I have a Blue Seas System six-circuit fuse block currently on the boat [to which] I have wired my VHF [radio] and chart plotter. I am trying to figure out what hot lead I disconnect from the back of the accessory switch so I can pull power from fuse block into the switch and out to the bait tank.

It looks like all the switches on the boat are wired in series. On the accessory switch specifically there are three terminals. two hots and one negative.

Thanks,

Andrew

Chuck Tribolet posted 05-03-2008 10:35 PM ET (US)     Profile for Chuck Tribolet  Send Email to Chuck Tribolet     
My Accessory switch has three terminals: Line (goes to +12 on
the battery, via a circuit breaker), Load (goes to the
electronics), and Ground (for the pilot light in the switch,
goes to the minus side of the battery).

In my case, and I suspect in our case, the Load sides goes
through a fuse block.

Do you really want the bait tank to run whenever the
electronics are on? I think not.

I'd put a bait tank on its own switch. Run the line side
back to +12 on the battery via an appropriate fuse, run the
load side to the bait tank pump, and run the ground to the
- side of the battery.

I doubt the switches are wired in series. More likely in
parallel. My three (Acc, Bilge Pump, and running lights) are.


Chuck

seabob4 posted 05-09-2008 06:04 PM ET (US)     Profile for seabob4  Send Email to seabob4     
There are TWO positive leads on your switch, not 3. The third is the ground that energizes your indicator light. You can't run two appliances independently of a simple on/off switch. Easy solution? Replace that switch with an on/off/on switch. Top for electronics, bottom for livewell. Problem solved. I'll send you one if you want. $5 for shipping, that's it.
jimh posted 05-09-2008 09:06 PM ET (US)     Profile for jimh  Send Email to jimh     
You probably mean to say that the battery supply to your switches is wired in parallel. The switches cannot be wired in series, else all of the switches would need to be on the ON position to actuate anything.

There is no telling how your boat is wired. We can only make an educated guess. My guess is that the builder has already wired the battery distribution to each switch. You just have to connect your load to the switch.

Andrewdavis34 posted 05-09-2008 09:16 PM ET (US)     Profile for Andrewdavis34  Send Email to Andrewdavis34     
Hi all,

I have a new 2008 Montauk 170. Thanks to all who replied .I was able to figure out how to wire in the bait pumps. The terminal end of the live well circuit came prewired from whaler. I found the end inside the access port on the starboard side of the boat.

Thanks again.
Andrew

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