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switch for boat lights


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cobrajet 
Member - Posts: 2
Member spacespace
Joined: July 23, 2008
Location: Washington, United States
Posted: July 23, 2008 at 2:31 PM / IP Logged  
i'm trying to install a switch for my boat lights it;s a 2 way switch when i hook the two leads one to hot the other one to ground when i turn the switch off it blow's the fuess why is it doing that ? i need help
James J P
megaman 
Copper - Posts: 385
Copper spacespace
Joined: June 24, 2008
Location: Montana, United States
Posted: July 23, 2008 at 3:59 PM / IP Logged  
Your two pole switch has two settings: Open and closed.  With one lead to +12v and the other to Ground, when you close the switch you're shorting 12v to ground, thus popping the fuse.  To connect your lights, you have to run +12v from the power source to one input, and the +12v side of your lights to the other input.
i am an idiot 
Platinum - Posts: 13,374
Platinum spaceThis member consistently provides reliable informationspace
Joined: September 21, 2006
Location: Louisiana, United States
Posted: July 23, 2008 at 4:46 PM / IP Logged  

Do you need to be able to turn one light on by itself, and then the other position needs to turn on 2 lights?   

cobrajet 
Member - Posts: 2
Member spacespace
Joined: July 23, 2008
Location: Washington, United States
Posted: July 27, 2008 at 9:59 AM / IP Logged  
no i need them to come on at the same time
James J P
i am an idiot 
Platinum - Posts: 13,374
Platinum spaceThis member consistently provides reliable informationspace
Joined: September 21, 2006
Location: Louisiana, United States
Posted: July 27, 2008 at 10:14 AM / IP Logged  
You need to ground both of the lights.  Then connect the positive lead of both lights to one terminal of the switch.  Connect the other terminal of the switch to a power source.  If you want the lights to be able to come on without the key, you need to get power from a constant source.  If they are to only come on with the key, connect it to a wire that is only hot with the key on. 

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