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04-25-2011, 07:30 PM
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#1 |
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Registered User
Join Date: Jul 2010
Location: Snowflake Az.
Posts: 86
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Air bag relay?
Whats the purpose of a relay between my compressor and power? Do I need it? Heath
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04-25-2011, 07:40 PM
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#2 |
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Registered User
Join Date: May 2005
Location: Beaverton, OR
Posts: 3,728
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Re: Air bag relay?
You might want to ask in the suspension forum, but it's best practice to use a relay to protect your circuit. The relay goes between the pressure switch and the compressor. The pressure switch sends the signal to the relay and the relay switches power to the compressor on.
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New Project: 1966 LWB C20 Plans: 1/2 ton conversion Dropmember front Dropmember rear Corvette discs Restored raised bed http://67-72chevytrucks.com/vboard/s....php?p=4295210 |
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04-25-2011, 07:42 PM
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#3 |
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Registered User
 
Join Date: Apr 2004
Location: Sacramento
Posts: 3,737
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Re: Air bag relay?
The purpose is to reduce the control amps needed. The compressor needs a lot of amps to run and you don't want to run those wires into the cab. It the same reason that the headlights and winches use relays.
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'72 2wd blazer, bagged w/ watts link & EDC '72 C10 "Lowered Farm Truck" STOLEN 5-18-11 '66 impala ht |
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04-25-2011, 10:36 PM
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#4 |
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1 thing at a time is progress.
Join Date: Jun 2007
Location: Ball Ground GA
Posts: 5,511
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Re: Air bag relay?
Moved ya over to the suspension section.
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Alan
Philippians 2:14-16 |
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04-27-2011, 02:42 PM
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#5 |
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Registered User
Join Date: May 2005
Location: evington,va
Posts: 1,200
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Re: Air bag relay?
what about just using large fuses
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04-27-2011, 03:29 PM
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#6 | |
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Registered User
Join Date: Apr 2004
Location: Sacramento
Posts: 3,737
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Re: Air bag relay?
Quote:
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'72 2wd blazer, bagged w/ watts link & EDC '72 C10 "Lowered Farm Truck" STOLEN 5-18-11 '66 impala ht |
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04-27-2011, 03:48 PM
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#7 |
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Happy to be here
 
Join Date: Mar 2000
Location: Cypress, TX
Posts: 39,023
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Why spend money on a fuse and holder, just wire it direct? Promise to send pics of the cool pyrotechnics show if it fails please.
Seriously, there is a proper way to wire a component with a large amp draw. It includes a turn on relay fed by a fused power source. This protects the component and the source from damage in the event of malfunction or failure. |
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04-27-2011, 03:59 PM
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#8 |
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Registered User
Join Date: Jul 2010
Location: "THE BIG EASY" New Orleans. LA
Posts: 108
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Re: Air bag relay?
Use the relay!!!
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Get Low |
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04-27-2011, 10:13 PM
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#9 |
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Happy to be here
Join Date: Mar 2000
Location: Cypress, TX
Posts: 39,023
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Re: Air bag relay?
This might give you a better understanding of how it works.
[IMG]http://*******************/files/how_to/wire-diagrams/compressor.gif[/IMG]
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