Know how to hook up switch to fuel pump?

Chris_H · 11-05-2001, 04:08 PM

Ok, I have some switches coming in from summit that I want to be able to hook up so that the car won't start when I hit a switch. Whether that means running it to the fuel pump, or to the ignition, I am looking for the best way to do this. Has anybody done this? I don't like alarms because nobody pays attention to them. And for the switch and the wiring, I can do this a lot cheaper. Who has done this, and what is the best way to do it? Thanks for any input you can give me.

Chris

ALS85GT · 11-05-2001, 04:17 PM

When I converted to carb fm fuel injection I had to cut the original "hot" wire and splice in a wire fm another "Hot" source. I don't have a/c so I used my AC on switch rather then a toggle switch. Thieves would never find it. Yeah they could start it, but it will run with what ever fuel was left in the bowl. Hehe..

Chris_H · 11-06-2001, 03:28 AM

Hmmm thats a pretty good idea, except I need my a/c here in the desert in the summer. I bought the ashtray door fix, and got a panel with 4 switches for inside the ashtray. Do you think it would be better to splice into the "hot" wire for the ignition, or into the fuel pump? I just don't want to mess up whichever one I tap into.

Chris

ALS85GT · 11-06-2001, 09:50 AM

If it's security your're looking for then I would tap into the "Hot" wire that goes to your fuel pump. Hide the switch and this should work for you..

------------------
85GT 5.0 was CFI converted to Holley 650. Hooker full length headers. Weiand Stealth manifold. 86 roller motor, crane 1:7:1 alum rocker arms(roller). SSI 220@.050/498 Roller cam. Summit double roller timing chain. HD oil pump, stock bottom end. Mallory Hi-Fire ignition. Under drive pulleys. Accell coil and Ford Motorsport 9mm wires. 93'8.8 posi. Working on getting 4:10s. AOD w/B&M shift kit. No figures yet, still working on it.

PKRWUD · 11-06-2001, 10:53 AM

I agree. Even if they get it started, they won't get more than 10 feet.

Take care,
-Chris

------------------
Retired Moderator
MustangNet

My site: Peckerwoods Pit Stop

My teams site: Jim Porter Racing

RACECAR spelled backwards is RACECAR

HEY !!! Are you ASE Certified ??? If you are, ask me about iATN.

drudis · 11-06-2001, 02:43 PM

Hypothetically speaking, if you have a 1989 Mustang LX, you can get the foglight switch for a GT and witeh the fuel pump relay into that switch. You just have to turn the foglight switch on to drive. Easy access, and not too obvious with an un-hidden switch.
(Hypothetically speaking of course)

------------------
Darius Rudis
Roadracer: Home built t-arm/panhard suspension powered by an S-trimmed motor :-)

My Mustang Page

Chris_H · 11-06-2001, 06:23 PM

Ok, now comes the question, where can I find the "hot" wire for the fuel pump? All I should have to do with that is put in a splice connector for the wire running to the switch right? Appreciate the help so far guys. Should have this done on my next days off next week.

Chris

chris91LX · 11-06-2001, 09:19 PM

Underneath the driver seat is a fuse or relay or something that you can unclip and that shuts off power to the fuel pump. I hooked up a loop to the power wire, I think it was the red one, and added a simple toggle switch to that. You can then put the toggle switch anywhere you like and there you have your cut-off switch. I think mine cost me about $1.75 for the switch and about 3 feet of wire.

------------------
91 LX 5.0
Z t-5, 3:73 gear, Vortech 73mm Mass Air, Accufab 65mm TB, BBK underdrives, Crane HI-6S Ignition, BBK unequal length headers, Bassani x pipe, 2.5" Dynomax Super Turbo cat back, Kenny Brown Super Subs, Factory Five Control Arms, Mac cold air kit, Nitto D/R's and more to come!

PKRWUD · 11-07-2001, 03:08 AM

The wire you want to splice the switch into is Red w/ a Black tracer, and connects your fuel pump relay (under the drivers seat) to the inertia switch.

Take care,
-Chris

------------------
Retired Moderator
MustangNet

My site: Peckerwoods Pit Stop

My teams site: Jim Porter Racing

RACECAR spelled backwards is RACECAR

HEY !!! Are you ASE Certified ??? If you are, ask me about iATN.

Chris_H · 11-07-2001, 06:27 PM

Thanks a lot guys! I appreciate everybody's input on this. I plan on getting this done on this coming Monday. Everybody on this site has always been a great help to me when I've needed it. Once again I appreciate everyone's help on this one!

Chris

11-05-2001, 04:08 PM	#1
Chris_H Registered Member Join Date: Oct 1999 Location: New Mexico Posts: 488	Know how to hook up switch to fuel pump? Ok, I have some switches coming in from summit that I want to be able to hook up so that the car won't start when I hit a switch. Whether that means running it to the fuel pump, or to the ignition, I am looking for the best way to do this. Has anybody done this? I don't like alarms because nobody pays attention to them. And for the switch and the wiring, I can do this a lot cheaper. Who has done this, and what is the best way to do it? Thanks for any input you can give me. Chris

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11-05-2001, 04:17 PM	#2
ALS85GT Registered Member Join Date: Aug 2001 Location: Miami, Fl, USA Posts: 69	When I converted to carb fm fuel injection I had to cut the original "hot" wire and splice in a wire fm another "Hot" source. I don't have a/c so I used my AC on switch rather then a toggle switch. Thieves would never find it. Yeah they could start it, but it will run with what ever fuel was left in the bowl. Hehe..

11-06-2001, 03:28 AM	#3
Chris_H Registered Member Join Date: Oct 1999 Location: New Mexico Posts: 488	Hmmm thats a pretty good idea, except I need my a/c here in the desert in the summer. I bought the ashtray door fix, and got a panel with 4 switches for inside the ashtray. Do you think it would be better to splice into the "hot" wire for the ignition, or into the fuel pump? I just don't want to mess up whichever one I tap into. Chris

11-06-2001, 09:50 AM	#4
ALS85GT Registered Member Join Date: Aug 2001 Location: Miami, Fl, USA Posts: 69	If it's security your're looking for then I would tap into the "Hot" wire that goes to your fuel pump. Hide the switch and this should work for you.. ------------------ 85GT 5.0 was CFI converted to Holley 650. Hooker full length headers. Weiand Stealth manifold. 86 roller motor, crane 1:7:1 alum rocker arms(roller). SSI 220@.050/498 Roller cam. Summit double roller timing chain. HD oil pump, stock bottom end. Mallory Hi-Fire ignition. Under drive pulleys. Accell coil and Ford Motorsport 9mm wires. 93'8.8 posi. Working on getting 4:10s. AOD w/B&M shift kit. No figures yet, still working on it.

11-06-2001, 10:53 AM	#5
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	I agree. Even if they get it started, they won't get more than 10 feet. Take care, -Chris ------------------ Retired Moderator MustangNet My site: Peckerwoods Pit Stop My teams site: Jim Porter Racing RACECAR spelled backwards is RACECAR HEY !!! Are you ASE Certified ??? If you are, ask me about iATN.

11-06-2001, 02:43 PM	#6
drudis Moderator Join Date: Dec 1999 Location: Livonia, MI, USA Posts: 1,194	Hypothetically speaking, if you have a 1989 Mustang LX, you can get the foglight switch for a GT and witeh the fuel pump relay into that switch. You just have to turn the foglight switch on to drive. Easy access, and not too obvious with an un-hidden switch. (Hypothetically speaking of course) ------------------ Darius Rudis Roadracer: Home built t-arm/panhard suspension powered by an S-trimmed motor :-) My Mustang Page

11-06-2001, 06:23 PM	#7
Chris_H Registered Member Join Date: Oct 1999 Location: New Mexico Posts: 488	Ok, now comes the question, where can I find the "hot" wire for the fuel pump? All I should have to do with that is put in a splice connector for the wire running to the switch right? Appreciate the help so far guys. Should have this done on my next days off next week. Chris

11-06-2001, 09:19 PM	#8
chris91LX Registered Member Join Date: Oct 1998 Location: Suburban Chicago, Hanover Park Posts: 695	Underneath the driver seat is a fuse or relay or something that you can unclip and that shuts off power to the fuel pump. I hooked up a loop to the power wire, I think it was the red one, and added a simple toggle switch to that. You can then put the toggle switch anywhere you like and there you have your cut-off switch. I think mine cost me about $1.75 for the switch and about 3 feet of wire. ------------------ 91 LX 5.0 Z t-5, 3:73 gear, Vortech 73mm Mass Air, Accufab 65mm TB, BBK underdrives, Crane HI-6S Ignition, BBK unequal length headers, Bassani x pipe, 2.5" Dynomax Super Turbo cat back, Kenny Brown Super Subs, Factory Five Control Arms, Mac cold air kit, Nitto D/R's and more to come!

11-07-2001, 03:08 AM	#9
PKRWUD Junior Member Join Date: Mar 1999 Location: Ventura, California Posts: 8,981	The wire you want to splice the switch into is Red w/ a Black tracer, and connects your fuel pump relay (under the drivers seat) to the inertia switch. Take care, -Chris ------------------ Retired Moderator MustangNet My site: Peckerwoods Pit Stop My teams site: Jim Porter Racing RACECAR spelled backwards is RACECAR HEY !!! Are you ASE Certified ??? If you are, ask me about iATN.

11-07-2001, 06:27 PM	#10
Chris_H Registered Member Join Date: Oct 1999 Location: New Mexico Posts: 488	Thanks a lot guys! I appreciate everybody's input on this. I plan on getting this done on this coming Monday. Everybody on this site has always been a great help to me when I've needed it. Once again I appreciate everyone's help on this one! Chris