Bypass c305 connector

2003 PONTIAC MONTANA
180,000 MILES
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KIPP_1992
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I had a lot of water leakage into the c305 connector pins were corroded Nd snapped off. van had been having a few issues and some told me to check the c305 connector. so I did. I was told I could bypass the connector but do not know which wires connect to which from inside van that was in the c305 connector and ones coming from the 3 wiring harnesses that connected to the c305.
Feb 11, 2020 at 7:09 PM
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ASEMASTER6371
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Good evening,

That connector was a very bad design. I have done many of them.

You can buy the connector for a little money but you have to pin it.

I attached the diagram. I circled the wires that go through that connector. It is for the fuel pump, sender and the fuel pressure sensor.

Roy
Feb 11, 2020 at 8:45 PM
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KIPP_1992
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What are the pink wires? all wires were pulled out of c305 connector there are two pink wires and only one connector coming from under van has a pink wire. there's also a light blue wire.
Feb 11, 2020 at 8:51 PM
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KIPP_1992
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I would like to bypass the connector if I could and just hard wire it I have looked all over for the connector . just want to know what wires would attach to what.
Feb 11, 2020 at 8:54 PM
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ASEMASTER6371
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I understand.

Can you post some pictures of the wires? The diagram does not show pink wires.

Roy
Feb 11, 2020 at 11:17 PM
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KIPP_1992
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Yes, when I get home I will.
Feb 12, 2020 at 4:01 AM
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ASEMASTER6371
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Thank you.

Roy
Feb 12, 2020 at 4:39 AM
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KIPP_1992
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How do I post photos?
Feb 12, 2020 at 5:51 AM
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KIPP_1992
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That's the wires on inside.
Feb 12, 2020 at 6:14 AM
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ASEMASTER6371
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What about the other side of the connector? Can you show me that as well?

Roy
Feb 12, 2020 at 8:31 AM
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KIPP_1992
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Other side of which connector?
Feb 12, 2020 at 8:37 AM
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KIPP_1992
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This?
Feb 12, 2020 at 8:39 AM
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ASEMASTER6371
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I need to see the wires you are connecting too.

Roy
Feb 12, 2020 at 8:43 AM
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KIPP_1992
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And the other plug has 4 wires coming out and 1 blue wire that was in a plug of its own.
Feb 12, 2020 at 8:52 AM
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ASEMASTER6371
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That is good.

You can start by matching up the colors of the wires in that connector to the loose wires.

Start matching up the wires and see if they all are accounted for.

Roy.
Feb 12, 2020 at 9:05 AM
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KIPP_1992
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All except on the inside of van there is two wires that don't match up with any on connectors. so I don't know where they connect an extra pink and I think white.
Feb 12, 2020 at 9:09 AM
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ASEMASTER6371
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Those wires are for the vent solenoid on the fuel tank.

Roy
Feb 12, 2020 at 9:14 AM
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KIPP_1992
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There was one plug with 4 wires black red white and brown then one with 8 wires and the third little plug only had a light blue wire in it. I'm confused here.
Feb 12, 2020 at 9:18 AM
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ASEMASTER6371
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You just said all the wires match up except the pink and white.

Can you explain?

Roy
Feb 12, 2020 at 9:22 AM
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KIPP_1992
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There's two extra in the van than what's coming from the connectors one pink one goes to the big connector under the van, but the other pink one doesn't match up with another wire coming from either connector and I think there is a white on two that doesn't match up to another wire.
Feb 12, 2020 at 9:33 AM
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KIPP_1992
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If you look at my first photo I posted there is two pink wires.
Feb 12, 2020 at 9:34 AM
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ASEMASTER6371
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Okay, let us back up.

Match up the ones that match. Take a picture of the remaining ones and let me know. I need to see both the harness inside and outside as well. Tape the wires together, for now, to see what does not match.

Roy
Feb 12, 2020 at 9:37 AM
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KIPP_1992
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Okay, will do that when I get home and get back to you.
Feb 12, 2020 at 9:44 AM
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ASEMASTER6371
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Sounds like a plan.

Roy
Feb 12, 2020 at 10:04 AM
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KIPP_1992
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The pink and black ones have no wire to connect to on other connectors,
Feb 12, 2020 at 2:17 PM
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KIPP_1992
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All other wires match up with another except those two.
Feb 12, 2020 at 2:21 PM
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ASEMASTER6371
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Good.

Those 2 are for the solenoid I told you about. They go to the vent solenoid.

There should be a 2 wire connector to attach those wires.

Roy

Feb 12, 2020 at 2:26 PM
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KIPP_1992
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There's only the connector that had 8 wires the connector that had 4 and a connector with one single wire that is light blue. there is no 2 wire connector .
Feb 12, 2020 at 2:30 PM
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ASEMASTER6371
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Okay, go to the solenoid. I posted the picture back a few posts. Those wires need to be run to that solenoid.

Roy
Feb 12, 2020 at 2:36 PM
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KIPP_1992
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There's no wires going from solenoid to where that connector is located and no that I took the connectors off. I have TCS light on and ABS light.
Feb 12, 2020 at 2:45 PM
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ASEMASTER6371
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If you have an ohmmeter, ohm the wires from the solenoid to the loose wires and see if you have continuity.

Roy
Feb 12, 2020 at 3:22 PM