relay and toggle switch

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mr348

Member - Posts: 1

Joined: May 01, 2007

Location: United States

Posted: May 01, 2007 at 6:31 PM / IP Logged

I am sure this has been asked a hundred times but could someone please help me out. i am wiring a hot rod and have an aftermarket wiring harness. (EZ wiring) I am putting 2 relays in the system to control the fuel pump and the electric fan. I am going to run both items off of seperate toggle swithces. Here is my question, how do I wire the first relay to have the fan toggle switch always hot so I can run the fan even with the key off? that way I can use the toggle to cool the car with the key out of the ignition. Second, how do I wire the second relay to the toggle for the fuel pump so that the toggle will only work with the key on? All i need is what sequence ot run wires to what number on my relays I have numbers 85,86,30, 87, 87a. Thank you in advance for all of your help.

~Jeff Cornick

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iblis

Member - Posts: 19

Joined: April 06, 2006

Location: Ireland

Posted: May 02, 2007 at 9:59 AM / IP Logged

Fan:

85 - 12V output from toggle switch

86 - Earth

30 - 12V constant power, direct from battery if necessary, but fused appropriately

87 - Fan (+)

87a - Nothing

Fuel pump:

85 - 12V output from toggle switch

86 - Earth

30 - 12V ignition lock controlled power, fused appropriately

87 - Pump (+)

87a - Nothing

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hotwaterwizard

Silver - Posts: 1,350

Joined: December 11, 2003

Location: California, United States

Posted: May 05, 2007 at 12:59 AM / IP Logged

relay and toggle switch - Last Post -- posted image.

John DeRosa (Hotwaterwizard)

Stockton California

When in doubt, try it out !

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relay and toggle switch

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