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Relay or Not? for a remote starter


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tonyrums 
Member - Posts: 3
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Joined: March 07, 2005
Posted: March 07, 2005 at 10:18 PM / IP Logged  
After searching the forums for a while, i realized i still don't understand electrical at all. Sorry if this issue has been covered but I'll explain anyway. I am using an SMS controller in my car to perform a few functions. One of which is a remote start function. With no key in the ignition, I can start my car (which has a BOA remote starter that I installed in it) by simply grounding one wire for 1 second and like magic my car starts. The SMS controller is what i want to to use to ground the wire. The controller has an output of about 500mA. My question is how do I use the 500mA to ground a completely different wire without either wire connecting? Any help or direction is appreciated. Thanks!
krog67 
Member - Posts: 4
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Joined: December 21, 2004
Location: United States
Posted: March 08, 2005 at 7:01 PM / IP Logged  
Use a relay. Look at the diagrams for a relay with a positive trigger and a negative output. or ground pins 86 and 87 of a relay..put your 500 ma trigger on 85 and the wire you need grounded on 30...piece o'cake
tonyrums 
Member - Posts: 3
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Joined: March 07, 2005
Posted: March 08, 2005 at 8:24 PM / IP Logged  
Sounds almost too easy. If I choose to ground those pins, should I ground them seperately or could I ground them at the same location? Thanks Again!
krog67 
Member - Posts: 4
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Joined: December 21, 2004
Location: United States
Posted: March 08, 2005 at 8:30 PM / IP Logged  
you can use a jumper to go from 86 to 87 or vice versa and then connect it to a factory ground point...if possible, otherwise any metal point is okay...
tonyrums 
Member - Posts: 3
Member spacespace
Joined: March 07, 2005
Posted: March 08, 2005 at 8:59 PM / IP Logged  
Thanks a lot!

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