fuel pump kill
Printed From: the12volt.com
Forum Name: Relays
Forum Discription: Relay Diagrams, SPDT Relays, SPST Relays, DPDT Relays, Latching Relays, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=91539
Printed Date: May 15, 2024 at 11:58 PM
Topic: fuel pump kill
Posted By: 93whitesol
Subject: fuel pump kill
Date Posted: March 11, 2007 at 12:24 AM
when using a relay for a fuel pump kill switch is wiring it this way a bad idea?
30: fuel pump wire to pump
86+87: fuel pump wire from dash
85: to toggle switch
Replies:
Posted By: auex
Date Posted: March 11, 2007 at 3:00 AM
Toggle switch to ground. I would use 87A instead of 87, that way the relay is only active when the switch is on and the key is on and less stress on the relay(flip switch on when getting out of car). I don't recommend fuel pump cut off because relays can go out and leave you stranded.
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Posted By: 93whitesol
Date Posted: March 11, 2007 at 11:26 AM
its a SPST so no 87a and yes the other side of the toggle is grounded.
My real concern is not using a dedicated power source and instead using the power which would normally go to the fuel pump. Should I be worried about using it this way?
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