fuel pump wiring

68_stanger

New Member

Nov 21, 2003

131

0

0

Petoskey, MI

Apr 26, 2006

#1

• Apr 26, 2006

• #1

I'm using a electric fuel pump in my 68 and its works well however I would like to change one thing about it. The pump is wired through a oil pressure switch and won't start to pump until oil pressure builds. Iwould like to set it up so that when I turn the key it runs for a few seconds to "prime" the system then shut off, like modern vechicles. How would I go about this? Thanks

 

iskwezm

10 Year Member

May 24, 2005

4,159

20

79

Rowland Heights,California

Apr 26, 2006

#2

• Apr 26, 2006

• #2

I just have mine wired on a switch and powered by the key

 

F

ForceFed70

That's why they call it "dope"

Founding Member

Dec 6, 1999

4,818

1

69

BC Canada

Apr 26, 2006

#3

• Apr 26, 2006

• #3

Run a wire from the "S" terminal of your starter solenoid through a diode to your fuel pump relay.

This will make the fuel pump act the same as normal except it'll also run while you are cranking the engine. You need the diode because you only want current to flow 1 direction..otherwise your fuel pump relay would be trying to power your starter solenoid while the engine is running.

 

brianj5600

Active Member

Sep 19, 2003

1,964

2

39

Middle TN

Apr 26, 2006

#4

• Apr 26, 2006

• #4

I llike a toggle switch that is always hot. That way I can get gas to the bowls easily and since it is not in plain sight, it is a form of theft deterent.