Mikey3000

I've searched, there seem to be a few threads but they don't ask the same question. I also checked forced induction faq, nothing there.

Is it ok to run both wires from the inline pump to the factory pump's harness connector?

I don't know if the current that the Aeromotive pulls would be too great and maybe hurt the circuit somehow. I'm not an electrical guy so I don't know these things.

Mikey3000

bump

Flamenco-T

You need to run an independent relay like we sell on our kit.

From the relay, you need to connect one to the Pos terminal of the pump, signal output on the chassis harness, 12 V source (from battery) and ground.

This way you're not burning up the current existing circuit.



relay is on the right

Mikey3000

ok. any other options?

boosted_dc2

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mikey3000 &raquo;</TD></TR><TR><TD CLASS="quote">ok. any other options?</TD></TR></TABLE>

listen to his advice, USE A RELAY! its easy and the SAFEST method. if you tap off that harness you will pop fuses from time to time, and may burn the harness. Also make sure you use a good low guage wire too.


Landon

Pro-Am 1934

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boosted_dc2 &raquo;</TD></TR><TR><TD CLASS="quote">

listen to his advice, USE A RELAY! its easy and the SAFEST method. if you tap off that harness you will pop fuses from time to time, and may burn the harness. Also make sure you use a good low guage wire too.


Landon</TD></TR></TABLE>

Not to mention if you just tap into that wire in the harness, it will not supply with the correct voltage/current. I did a comparison one day on a customers car. I utilized the setup as was, I soldered from the harness at the stock pump location, and routed to the rear of the car. At idle I set it to 60 PSI (just a number that I was using). Then I ran a 10 gauge from a seperate relay (MSD in this case) under the dash. The relay received power directly from the battery (still in the engine bay location) that was also a 10 gauge. Then grounded the pump with a 10 gauge wire. At I idle I saw a 10 PSI jump. So now I was at 70 PSI at idle. So if that is at idle, you can only imagine how much more efficent a proper hook up (relay/10 gauge wire) will be over utilizing the stock wiring.

Jason

WHTZ

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Pro-Am 1934 &raquo;</TD></TR><TR><TD CLASS="quote">

Not to mention if you just tap into that wire in the harness, it will not supply with the correct voltage/current. I did a comparison one day on a customers car. I utilized the setup as was, I soldered from the harness at the stock pump location, and routed to the rear of the car. At idle I set it to 60 PSI (just a number that I was using). Then I ran a 10 gauge from a seperate relay (MSD in this case) under the dash. The relay received power directly from the battery (still in the engine bay location) that was also a 10 gauge. Then grounded the pump with a 10 gauge wire. At I idle I saw a 10 PSI jump. So now I was at 70 PSI at idle. So if that is at idle, you can only imagine how much more efficent a proper hook up (relay/10 gauge wire) will be over utilizing the stock wiring.

Jason</TD></TR></TABLE>

True!

Mikey3000

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Pro-Am 1934 &raquo;</TD></TR><TR><TD CLASS="quote">

Not to mention if you just tap into that wire in the harness, it will not supply with the correct voltage/current. I did a comparison one day on a customers car. I utilized the setup as was, I soldered from the harness at the stock pump location, and routed to the rear of the car. At idle I set it to 60 PSI (just a number that I was using). Then I ran a 10 gauge from a seperate relay (MSD in this case) under the dash. The relay received power directly from the battery (still in the engine bay location) that was also a 10 gauge. Then grounded the pump with a 10 gauge wire. At I idle I saw a 10 PSI jump. So now I was at 70 PSI at idle. So if that is at idle, you can only imagine how much more efficent a proper hook up (relay/10 gauge wire) will be over utilizing the stock wiring.

Jason</TD></TR></TABLE>

Very nice, thanks for your input. To summarize, I'm going to run 10 gauge wire from (+) pump to a relay, then go from the relay to where? And go from (-) pump to a good chassis ground. The relay has to be grounded too, correct?

N20civicB18

wow man i thought this is common sence to anyone in the forum, sorry

anyway the relay put a 10guage feed power to pin 30 on the relay (use a fuse)
then put 10guage to pin 87 on the relay to the fuel pumps + terminal.
then pin 86 on the relay goes to the switch, in this case you will use the old fuel pumps power feed as the switch - there will be 2 wires going to your stock fuel pump right now, one power and 1 ground, hook this to the +12 wire
then pin 85 on relay put a wire from the ground going to the stock pump

UMM more I think of it, is there constant power to the stock pump and a switched ground? or constant ground and a switched power? hmmm maybe not so much common sence... been a while since ive played with that

Mikey3000

you've just confused me. i need simplicity in my life.

N20civicB18

look on the bottom of the relay, there will be 4 or 5 pins/connectors comming off the bottom. those connectors will have a number like 30/85/86/87 to indicate what the connector does.

N20civicB18

i found this if it helps you

Mikey3000

ah thats awesome, thanks a lot

Flamenco-T

You may also use a thicker wire for ground and 12V battery pos to relay.

I use 10 gauge wire and 14 gauge for everything else..

trust me, I have done plenty

Mikey3000

what amp rating should the relay carry?

2fast4u831

What size fuse do you guys use for the fuel pump?

Danny_EJ

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 2FAST4U831 &raquo;</TD></TR><TR><TD CLASS="quote">What size fuse do you guys use for the fuel pump? </TD></TR></TABLE>

30 amp is standard automotive relay

G"UNIT

Mikey3000

i just wanted to let people know that Barry Grant products makes a relay with wire harness and diagram just for accessories such as fuel pumps. it makes wiring an easy job.


Modified by Mikey3000 at 7:08 AM 1/16/2007

dmotoguy

how would I modify this if I'm wiring (2) pumps..

Turbo-charged

run 2 separate relays for 2 pumps is how ive done it.


i'll "T" the switched 12v and ground and run seperate wires from the battery to the pump....or run a big wire from the battery to a distribution block which you can from there power both of the relays and then to each pump.


its always better to over wire than to under wire. ive also started using motec relay's that i get from Tony for anything important like a fuel pump relay. they are soooooo much nicer. no more spade terminals or solder connection....you can terminate the wiring by using a gm style pin. works very well.

V-SPEC 1

Where you guys route your wiring? do you run your wires from the pump to under the car all the way to the front or you run the wires from the pump to the inside of the car for safe mode and not getting the wires get chap or cut accidentally under the car w/ debris.

dmotoguy

do you use car audio distribution blocks? ~how much for a motec relay?

mr. Grind

Back from the dead even. Great info to wire my a1000

strigga

aeromotive recommends an10 fuel lines. anyone running an8 fuel lines? any problems with a smaller sized fuel line?