fpdm/fuel pump wiring upgrade

SWEET2KSTANG · February 11th, 2009, 07:25 AM

i did a wiring up grade on my car and these are the steps i took:

went to parts store and picked up 25ft of 10 gauge wire (i've heard some people using 8ga wire), universal relay, 30A inline fuse fitting, t-fittings, and package of misc electrical fittings.

disconnect negative off battery

solder the inline fuse to one end of the 10ga wire, this will be the end that will be hooked to 12+ scource

run the 10ga wire thru thru the engine compartment, thru the wire groment on drivers side firewall.

i already had my interior out, but you will atleast need to pull up the carpet on the drivers side. route the wire under the carpet to the back. i ran mine with the factory wiring under the carpet to keep secure and clean.

find a place you want to mount your relay to, i mounted mine on the bracket that holds fpdm.

the power wire that was ran to the back will be connected to pin 30 on the realy. after you find where you want to mount the relay, cut the power wire to length needed.

pull harness off the fpdm, and cut the tape back off the factory wire harness to expose all the wires to the connector. cut the pink/black trace wire, be sure to leave enough wire to put a connector on!

the pink/black wire that comes off the fpdm connector will need to be lengthed and connected to pin 87 on the relay. the wire that runs in the harness will need to be lengthened and be connected to pin 86.

now this is the part that can get exciting. the tank will need to be lowered enough to get to the wiring on the fuel pump hat.

the extra wire that was was cut off from the power wire will be used to run from the fpdm harness to fuel pump hat. run the wire down to the tank so it will reach the fuel pump hat. i routed the wire down thru the grommet directly below the inertia switch.

locate the brown/pink wire on the fuel pump hat and tap into it with either a t fitting or a quick splice. connect the wire you ran down to the tank to this wire. be sure that the wire is tucked up safely and wont be getting pinched or cut.

you can mount the tank back up and pull the extra length of wire up to get out the slack. connect that wire to the brown/pink wire on the fpdm harness.

pin 85 will need to be grounded with same gauge wire that the power wire is. i used the same ground that the fpdm was using.

zip tie everything up, clean up, and put interior back together.

SWEET2KSTANG · February 11th, 2009, 07:26 AM

connect the power wire to the side of the fuse block that the battery + wire goes to. install fuse and hook battery back up.

~C~ · February 11th, 2009, 07:36 AM

Damn nice write up Sweet! How long did this take you to do?

SWEET2KSTANG · February 11th, 2009, 07:42 AM

i was changing my fuel pump, and detailing my interior the same night. i think without taking the interior completely out, this could be done in about 2-3hrs depending how familiar you are with droping the tank.

PapaSmurf · February 11th, 2009, 07:58 AM

very nice writup Mike

R3dFyre02 · February 11th, 2009, 11:16 AM

dumb question, but what does this do? just give a few more amps and true 13.5 volts from th alt to the pump rather than run its power through the cars wiring harness?

RyanGT · February 11th, 2009, 11:21 AM

yeah, free's up a few % duty cycle. Its not much but every little bit helps! Although this is generally done with a BAP. I don't see it in these pics.

Trick Tuners · February 11th, 2009, 12:58 PM

Nice write up! I would love it if you could cut and past it onto the DIY section of my forums. The "How to" section for the DIY guys - Trick Tuners Forums If you are too lazy to register and will allow me to copy and paste i can do that too. rep'd

SWEET2KSTANG · February 11th, 2009, 04:43 PM

will do.

February 11th, 2009, 07:25 AM	#1
SWEET2KSTANG mm's nitrous mod 2000 mustang gt 11.79@115.83 Join Date: Oct 2006 Location: N.W. AR Posts: 8,987	fpdm wiring upgrade i did a wiring up grade on my car and these are the steps i took: went to parts store and picked up 25ft of 10 gauge wire (i've heard some people using 8ga wire), universal relay, 30A inline fuse fitting, t-fittings, and package of misc electrical fittings. disconnect negative off battery solder the inline fuse to one end of the 10ga wire, this will be the end that will be hooked to 12+ scource run the 10ga wire thru thru the engine compartment, thru the wire groment on drivers side firewall. i already had my interior out, but you will atleast need to pull up the carpet on the drivers side. route the wire under the carpet to the back. i ran mine with the factory wiring under the carpet to keep secure and clean. find a place you want to mount your relay to, i mounted mine on the bracket that holds fpdm. the power wire that was ran to the back will be connected to pin 30 on the realy. after you find where you want to mount the relay, cut the power wire to length needed. pull harness off the fpdm, and cut the tape back off the factory wire harness to expose all the wires to the connector. cut the pink/black trace wire, be sure to leave enough wire to put a connector on! the pink/black wire that comes off the fpdm connector will need to be lengthed and connected to pin 87 on the relay. the wire that runs in the harness will need to be lengthened and be connected to pin 86. now this is the part that can get exciting. the tank will need to be lowered enough to get to the wiring on the fuel pump hat. the extra wire that was was cut off from the power wire will be used to run from the fpdm harness to fuel pump hat. run the wire down to the tank so it will reach the fuel pump hat. i routed the wire down thru the grommet directly below the inertia switch. locate the brown/pink wire on the fuel pump hat and tap into it with either a t fitting or a quick splice. connect the wire you ran down to the tank to this wire. be sure that the wire is tucked up safely and wont be getting pinched or cut. you can mount the tank back up and pull the extra length of wire up to get out the slack. connect that wire to the brown/pink wire on the fpdm harness. pin 85 will need to be grounded with same gauge wire that the power wire is. i used the same ground that the fpdm was using. zip tie everything up, clean up, and put interior back together. __________________ right now, she is a jackstand warrior if the car was a horse, i would shoot it!!! project warhorse under construction Last edited by SWEET2KSTANG : February 11th, 2009 at 07:32 AM.

February 11th, 2009, 07:26 AM	#2
SWEET2KSTANG mm's nitrous mod 2000 mustang gt 11.79@115.83 Join Date: Oct 2006 Location: N.W. AR Posts: 8,987	connect the power wire to the side of the fuse block that the battery + wire goes to. install fuse and hook battery back up. __________________ right now, she is a jackstand warrior if the car was a horse, i would shoot it!!! project warhorse under construction

February 11th, 2009, 07:36 AM	#3
~C~ ~C~, The Other White Meat! Y2K YellowJacket GT ~TBD~ Join Date: Jun 2008 Location: West side B-More Posts: 1,601	Damn nice write up Sweet! How long did this take you to do? __________________ BLOWN Bumblebeast! 370 rwhp / 381 ft lbs ~Tuned by JJ at WMS "Like the blind man says......We shall see...."

February 11th, 2009, 07:42 AM	#4
SWEET2KSTANG mm's nitrous mod 2000 mustang gt 11.79@115.83 Join Date: Oct 2006 Location: N.W. AR Posts: 8,987	i was changing my fuel pump, and detailing my interior the same night. i think without taking the interior completely out, this could be done in about 2-3hrs depending how familiar you are with droping the tank. __________________ right now, she is a jackstand warrior if the car was a horse, i would shoot it!!! project warhorse under construction

February 11th, 2009, 07:58 AM	#5
PapaSmurf Hardcore Enthusiast 2003 Mustang GT 13.86 @ 100.87 Join Date: Jan 2008 Location: VA Beach, VA Posts: 1,496	very nice writup Mike __________________ mods listed in garage

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February 11th, 2009, 11:21 AM	#7
RyanGT Hardcore Enthusiast 2000 GT Join Date: Dec 2006 Location: Lynnwood, Washington Posts: 1,864	yeah, free's up a few % duty cycle. Its not much but every little bit helps! Although this is generally done with a BAP. I don't see it in these pics. __________________ 2000 Black convertible GT: KB 15psi, and other goodies...

February 11th, 2009, 12:58 PM	#8
Trick Tuners Hardcore Enthusiast KB'd GT Join Date: Nov 2006 Location: San Diego Posts: 2,436	Nice write up! I would love it if you could cut and past it onto the DIY section of my forums. The "How to" section for the DIY guys - Trick Tuners Forums If you are too lazy to register and will allow me to copy and paste i can do that too. rep'd __________________ SCT Tuning, JLT intakes, Aeroforce OBDII gauges and PLX wideband products @ Trick Tuners My forums Xcal3 SF with preloaded tunes and free custom tunes for life for $379 shipped. Custom tunes based on actual data is extra.

February 11th, 2009, 04:43 PM	#9
SWEET2KSTANG mm's nitrous mod 2000 mustang gt 11.79@115.83 Join Date: Oct 2006 Location: N.W. AR Posts: 8,987	will do. __________________ right now, she is a jackstand warrior if the car was a horse, i would shoot it!!! project warhorse under construction

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fpdm/fuel pump wiring upgrade

fpdm wiring upgrade