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radio power wire...

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Zonic2001

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I have a 2006 sportster 4-tech and would like to take the factory radio and connect it to the auxiliary battery I'm about to install. Where in the engine compartment I can tap this radio power wire and connect it to the auxiliary battery? I have an after market amplifier that I'll be connecting to this aux battery so when I beach the boat I'll use the aux batt and not the main boat cranking batt. Anyone can help???????
 
If you use a 1-2-all switch just wire it as it is. The battery switch switches power as you turn it to draw from ...1-2-all The battery switch changes direction of power.

Karl
 
So if I connect the new amp to let say battery #1 where the fac radio is installed, I can use battery #2 for crancking? Is that correct?
 
NO, you connect your stereo complete...the switch lets you use what ever battery power source you chose, or all/ both if you need emergency power. The switch lets you use #1 or #2 or all/ both batteries, in what ever forum you want. To charge both batteries while under way put switch to "all" to charge up both batteries.

Karl
 
u r not following me... yes I'll be using a 1-2-all switch... my concern is when I BEACH the boat and the motor is off. right now the factory radio is on batt 1. If I connect the amp into battery 2, then I have to keep the switch in "ALL" position so both units will work. This will be drawing from both batteries and may drain both batteries leaving me without a goode battery to cranck the engine and return back home... do u follow me?
 
The switch will divert power from what ever battery you turn it to. I would run you amp from a circuit board not the battery direct. The switch lets you chose the power source. Like a lamp in your house...plug it in outlet #1 or outlet #2...
 
the amp was installed by someone else and the power wire goes straight into the batt. Maybe I need to connect it to a circuit board... where is that board on vthe 06 sportster?
 
How did I know you were going to say that... Ok you can hook it up direct but it should have a fuse link in it in case it shorts out, it will blow the fuse link. If it were me I would go to like west marine and get a power board to run it in between the switch and the battery. That way you can use the stereo on any battery and not worry about it being on 2 separate power sources... and not being able to use it on either one.

Karl
 
It's not a problem... On the seadoo all the power comes from the mpem...There are a bunch of members that have run high power stereos on board. I do a search for some results for you.
 
the link talks about stereos but I didn't see anything specific about power boards... is ok... I continue using the way I have currently have. Thanks!
 
I didn't read al the posts in the thread...but if i remember it discusses connections to power. This is like my 78th post tonight. I'll keep looking for a "power Connection" thread.

Karl
 
I know there is a thread with pics of a high power amp connected with a board, and a full write up with all the components...I find it and post it back.
 
I'm headin to bed, but I will write this up for you tomorrow. You just need the 1,2, all switch. You connect the amp to the common "ON" post.
 
OK...If you are still interested.

I think a lot of people are use to wiring car audio and think they just do it the same way in a boat. I did mine a little different. I think the boat came with an on/off battery switch for a reason. Most people don't use their boats every day or every week like they do a car. Anything connected to the battery may drain the battery down over a period of sitting. So by using the battery switch you are totally disconnecting everything. It is nice to have a place to disconnect all power while the boat is stored or not in use. In car audio, the amp is usually connected directly to the battery. In boats, this is not necessary, and I dont recomend it. By hooking the positive cable to the battery switch, you can make sure it is not drawing anything when the switch is off.

As far as using the combo position switch with 1,2,all or off. You just hook it to the post on the back that you hook the starter and other wires to. You hook 1 battery to the 1 and 2 post, then eveything else that you want to be switched on to the common post.

When the battery is on 1, everything will be drawing power from that battery and only that battery is charged. Same thing on 2, just that battery is used and charged. When on all, both batteries are being used and charged.

If you hook the amp directly to one battery, you dont have the option of using that 2nd battery, you are not connected to it.

I have my audio system all hooked to the on/off switch. I am adding the 2nd battery this week with the combo switch and will make a how to section and add pics for everyone. It really is an easy concept...As with anything electrical, make sure to use proper wire and an inline fuse or circuit breaker. I used all 4 gauge wire and an inline 75 amp fuse.
 
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RFoster... PM or e-mail me when you post pictures and instructions... I was not able to do the job this w/e therefore, will be next.
 
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