Can't find fuel pump connector

[MrOverCast]

Hahah my bad. That's what I'm trying to findout . I cannot find the actual connector that goes into the fuel pump. I was trying to figure out if the fuel pump connector is on a separate harness. Like for example the cab harness or chassis harness

I guess you're working on the other end. When you said fuel pump connector, I assumed you mean the connector that plugs into the fuel pump.

 

[Supercharged111]

Fuel pump harness? Is there a whole separate harness the the engine harness plugs into for the fuel pump?

Fuel pump/sender and brake lights are one harness that goes down the frame. It disconnects up by the booster and those plugs come from the firewall. You said you have a harness, I'm guessing it's not on the vehicle? What is on the recipient vehicle?

 

[MrOverCast]

Fuel pump/sender and brake lights are one harness that goes down the frame. It disconnects up by the booster and those plugs come from the firewall. You said you have a harness, I'm guessing it's not on the vehicle? What is on the recipient vehicle?

I have the engine harness on a table. I would like to put the harness on my carbureted 350 that's in my 85 chevy with all the sensors and stuff. But the problem is I want the fuel pump to work but I guess its not going

 

[618 Syndicate]

I have the engine harness on a table. I would like to put the harness on my carbureted 350 that's in my 85 chevy with all the sensors and stuff. But the problem is I want the fuel pump to work but I guess its not going

Don't those have a mechanical pump?

 

[Nad_Yvalhosert]

Yeah, so the ENGINE harness is for the ENGINE. If you want the fuel pump connector, which is 8-10 feet away from the ENGINE, you need a different harness.
I'd suggest you see the harness that travels along the frame, to and past the fuel tank, and ends at the tail lights.

 

[MrOverCast]

Yeah, so the ENGINE harness is for the ENGINE. If you want the fuel pump connector, which is 8-10 feet away from the ENGINE, you need a different harness.
I'd suggest you see the harness that travels along the frame, to and past the fuel tank, and ends at the tail lights.

I was aware it's for the engine but I wasn't sure if the actual fuel pump connector is on the engine harness. So basically I'd have to buy the entire tail light harness

 

[Supercharged111]

I was aware it's for the engine but I wasn't sure if the actual fuel pump connector is on the engine harness. So basically I'd have to buy the entire tail light harness

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Having said that, I suspect that some of that wiring goes through the C100 firewall connector under the brake booster. Not sure how exactly you intend to mate this harness with your truck right there.

 

[MrOverCast]

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Having said that, I suspect that some of that wiring goes through the C100 firewall connector under the brake booster. Not sure how exactly you intend to mate this harness with your truck right there.

The C100 connector is just didigal input, ABS and lighting, one of the brown wires is a 12 volt switched ignition and so is one of the red wires. I've powered on the harness and everything works. The idle air control works. I even connected a crank sensor and the fuel injectors actually go off. The 5.7 vortec is basically the same engine as the 350. My plan was to connect all the sensors, reluctor wheel, etc. I want to cut off the spider injector connector and put individual fuel injectors. And buy a intake manifold for it

 

[GoToGuy]

The connector at the fuel tank pump a weather pack/ OEM #12020425. Is no longer listed or been updated. But i believe the correct connector is one of these two. See the photo.

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[MrOverCast]

The connector at the fuel tank pump a weather pack/ OEM #12020425. Is no longer listed or been updated. But i believe the correct connector is one of these two. See the photo.

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Thank you for the information. Very useful, but I believe that connector is on a separate harness on the vehicle that my engine harness came off of