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alarm in a boat


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texoma 
Member - Posts: 2
Member spacespace
Joined: February 10, 2004
Location: United States
Posted: July 07, 2008 at 3:50 PM / IP Logged  

I'm puting in a alarm in a BOAT.  I'm trying to hook up the parking light flash to the nav/anc light.  When you turn the switch on it sends 12 v through the gray wire and the black wire is the neg.  When the switch is off it kicks BOTH wires to neg.  So when you hit the alarm it blows the fuse since its sending 12v to ground.  Can i just cut the wire coming out of the computer and put a diode in line?  Wouldn't that keep it from going back to ground?  What size of diode would I need?  I see most are 1 amp.  The power going to them is 15 amp.  So How do I get them to flow 15 amps so the lights will work the same.

Thanks SO MUCH for your time.

Shawn

texoma 
Member - Posts: 2
Member spacespace
Joined: February 10, 2004
Location: United States
Posted: July 07, 2008 at 4:24 PM / IP Logged  
NEVERMIND!!  Had a brain Fart!!!!!  JUST USE A RELAY MORRON!!!!
KarTuneMan 
Platinum - Posts: 7,056
Platinum spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member consistently provides reliable informationspace
Joined: December 14, 2004
Location: Isle Of Man
Posted: July 07, 2008 at 8:29 PM / IP Logged  
an alarm in a boat.... can you explain that to me...?alarm in a boat - Last Post -- posted image.
howie ll 
Pot Metal - Posts: 16,466
Pot Metal spacespace
Joined: January 09, 2007
Location: United Kingdom
Posted: July 08, 2008 at 4:52 AM / IP Logged  
Don't worry texoma, we all have brain fade occasionaly, Kar Tune man in your new job, you should be selling (and installing the things), google earth to Antibes Marina in the south of France and you will see why boats need alarms! Yes the answer is using  a relay as an interrrupt, 87a to switch, 87 and 86 as fused pos, 85 as neg trigger and 30 as output.
KarTuneMan 
Platinum - Posts: 7,056
Platinum spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member consistently provides reliable informationspace
Joined: December 14, 2004
Location: Isle Of Man
Posted: July 08, 2008 at 11:40 AM / IP Logged  

Sad to say, Cabelas has all of the install pro's they need.... I guess. They know what I do, and they know I want to..... so we'll see.

I'm in the "auto/atv" dept.  Plenty to sell, NOTHING to install.alarm in a boat - Last Post -- posted image.


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