electric fuel pump and fan wiring questions - Team Camaro Tech
Electrical & Wiring Troubleshooting electrical.

LinkBack Thread Tools Display Modes
post #1 of 2 (permalink) Old Jan 30th, 08, 11:48 PM Thread Starter
Senior Tech
Join Date: Feb 2000
Location: San Bernardino, CA
Posts: 1,082
electric fuel pump and fan wiring questions

i just got my ls1 running. its a carb setup, i have a sumpped stock tank and an external edelbrock street 120gph fuel pump. right now just to fire the car i have the pump hooked up to a keyed 12v source. the car isnt drivable yet so i will wire the relays in later.

my main question is, do most of you electric fuel pump guys have toggle or on/off switches for your pumps? i have to key my ignition box to load tunes and things and dont want my fuel pump running every time i key the car.

also, im running 2001 F-body cooling fans mounted to my stock radiator. would it be wise to have one fan hooked up to a thermostat switch (200* on 190* off) and hook the other up to a toggle switch. that way i can cool the car without it running?

im looking to add a switch panel like this to my dash

i want to use one switch for my starter, fuel pump, and secondary fan.

sound like a plan?

69 coupe

Last edited by MY FIRST 69; Jan 31st, 08 at 02:14 PM.
MY FIRST 69 is offline  
Sponsored Links
post #2 of 2 (permalink) Old Jan 31st, 08, 01:55 PM
Senior Tech
Rodder's Avatar
Join Date: Jul 2006
Location: Roswell, GA
Posts: 1,431
Send a message via AIM to Rodder Send a message via Yahoo to Rodder
Re: electric fuel pump and fan wiring questions

I'm using the LS1 PCM to control all of that (also running EFI).

For fans, I like doing the dual-speed thing like the stock LS1 does. You could do the same thing without a computer. See my diagram here:

At the bottom left of that diagram where the lines connect to the PCM, you could run those to old fashioned thermostat switches that you screw into the radiator or engine.

For manual override, you'd need to add some switches. Can probably come up switch a slick way to rig up the switches so that one is On-Off-Auto, and the other is Hi-Lo-Auto. I'd have to think about that some more.

I don't have a switch for my fuel pump--just let the PCM handle that. The PCM will turn it on to prime the system, then shut it off until the engine starts turning, and then turn it back off when the engine stops turning. If I need to kill the fuel pump manually, I pull the fuel. I've heard of people using an oil pressure switch with a relay on carb'd engines with electric pumps.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
- LS1, T56, Hooker longtubes, Autokraft pan & mounts, GM LS7 clutch, Borla ProXS, Moser/Strange/Wilwood 9", Covans dash, UltraLite IIs, Procar Elites, Vintage Air GEN-IV, AGR 12:1 steering, Addco swaybars, Hydratech hydroboost
Rodder is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the Team Camaro Tech forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address.
NOTE we receive a lot of registrations with bad email addresses. IF you do not receive your confirmation email you will not be able to post. contact support and we will try and help.
Be sure you enter a valid email address and check your spam folder as well.

Email Address:


Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome