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1. When Is a Relay Needed?
   

   What is a relay and how does someone know if one is needed?

   Tags: San Antonio, TX,

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   Asked by AliethiaHubbard from Phoenix, AZ
   Answered 16 years ago.

2 Answers

1. 
   A relay is a device that takes a low current activation trigger and supplies a high current power source. A common application would be using a very small switch to turn on something that draws a lot of current. The switch would engage the relay, which would then supply the power.
   Links: www.audioexpertonline.com
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   Answered by Audio Expert 11203 49th St N, Clearwater, FL, 33762, 727-573-2626 (Novice with 6 pts.)

   Answered 16 years ago.

2. 
   I have a 2002 Chevy Blazer and we changed the dimmer switch because the brake lights on the bottom would not work but when we changed it now our vehicle wont stay running and nothing works now but the headlights and brake lights . What can we do to correct this or is it the security system?
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   Answered by pferguson01 (Novice with 2 pts.)

   Answered 16 years ago.