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magnumv8 · 10-26-2010, 04:42 PM

wire the relay like this.....

pin 30 goes to the pump

pin 87 is your power for the pump

pins 85 & 86 are the relay coil for activating the relay, wire as necessary for compatibility with your ECU.(some are positive switching and some are ground switching)....

lastly, wire your momentary switch (fused) with the connection going to pin 87A of the relay.....

this allows everything to function normally while allowing you to supply power to run the pump with the computer "off"...this also won't cause a "back-feed" condition into the computer which could damage it......

D L Rambo......

10-26-2010, 04:42 PM	#8
magnumv8 Member Join Date: Feb 2009 Location: Coraopolis, Pa. Posts: 172 Likes: 0 Liked 0 Times in 0 Posts	Re: DP wiring wire the relay like this..... pin 30 goes to the pump pin 87 is your power for the pump pins 85 & 86 are the relay coil for activating the relay, wire as necessary for compatibility with your ECU.(some are positive switching and some are ground switching).... lastly, wire your momentary switch (fused) with the connection going to pin 87A of the relay..... this allows everything to function normally while allowing you to supply power to run the pump with the computer "off"...this also won't cause a "back-feed" condition into the computer which could damage it...... D L Rambo......