JTR Fuel Pump Wiring Confusion

[240zBoy]

Started to tackle the wiring on my fist v8 z-car and came to a hault at the fuel pump. Earlier in the manual I was told how to wire my 72z using the wires that were installed in the rear for a fuel pump that was never installed in America. So I did that but then I started to install my fuel pump switch from Summit and had a brain toot.

 

It states "Do not connect the wire that operates the starter solenoid to the fuel pump, because when the oil pressure switch turns on the fuel pump, the starter will also be turned on. If you do this just once you will probably never do it again" And then this just adds to the mess that the last quote said

"If you are using HEI "Which I am" the easiest way to wire the fuel pump for cranking conditions is to connect the green-white wire to the fuel pump wiring"

 

 

If someone could clear up these two into what I need to do to have my wiring for the fuel pump correct it would really get my project on the move.

-Thanks

[240zBoy]

so now what I have read up on it seems like people splice the green wire near the center console box. I dont know why that would matter though as the green wire will still have power at the same time as it did not get removed from its power source. But I see it would make since if removed from the center console control box then spliced?

 

Another thing I have heard is to not even care about it if you are running a carbed motor.. My problem with that would be that my fuel cut off switch would not be hooked up right and I would like it to be working.

 

Someone please help me lol I dont want to be stuck trying to figure this out for a week.

[Miles]

so now what I have read up on it seems like people splice the green wire near the center console box. I dont know why that would matter though as the green wire will still have power at the same time as it did not get removed from its power source. But I see it would make since if removed from the center console control box then spliced?

 

Another thing I have heard is to not even care about it if you are running a carbed motor.. My problem with that would be that my fuel cut off switch would not be hooked up right and I would like it to be working.

 

Someone please help me lol I dont want to be stuck trying to figure this out for a week.

 

 

Below is a list of wires you need from JTR wiring figure pg 9-6.

Wire #1 is the green/white wire originally used to provide power to the coil when starting the L6 engine. Now it provides power to the fuel pump while cranking.

 

Wire #2 is the wire from the pressure switch to the fuel pump. I used a Painless fuel pump relay kit so my #2 wire is the Painless yellow/white wire. But you could run your #2 wire inside and connect it to the stock green wire. You will find the stock fuel pump green wire between the glove box and the side of the car. There is a bullet connector there that you can open and use for your #2 wire from the pressure switch. The other end of the green wire is located near the fuel level sending unit. I mounted the Painless relay on a L bracket in the passenger footwell next to the heater blower and connected the relay output to the stock green wire as noted above.

 

Wire #5 is the black/white ignition wire with the protective sleeve. This wire goes to the positive terminal of the HEI. You will tap off of this wire to the input side of the pressure switch as shown as a splice by JTR. This tap powers the fuel pump or triggers the Painless relay when the pressure switch closes.

 

If you use the stock ignition switch and the JTR wiring configuration the fuel pump will come on just before the starter turns on. You can hold the key in this position to run the fuel pump to fill the fuel bowels.

Edited August 20, 2010 by Miles