Bypass c305 connector

Tiny
KIPP_1992
  • MEMBER
  • 2003 PONTIAC MONTANA
  • 180,000 MILES
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.
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Tuesday, February 11th, 2020 AT 7:09 PM

30 Replies

Tiny
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
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Tuesday, February 11th, 2020 AT 8:45 PM
Tiny
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.
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Tuesday, February 11th, 2020 AT 8:51 PM
Tiny
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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.
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Tuesday, February 11th, 2020 AT 8:54 PM
Tiny
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I understand.

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

Roy
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Tuesday, February 11th, 2020 AT 11:17 PM
Tiny
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Yes, when I get home I will.
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Wednesday, February 12th, 2020 AT 4:01 AM
Tiny
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Thank you.

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

Roy
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Wednesday, February 12th, 2020 AT 8:31 AM
Tiny
KIPP_1992
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Other side of which connector?
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Wednesday, February 12th, 2020 AT 8:37 AM
Tiny
KIPP_1992
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This?
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Wednesday, February 12th, 2020 AT 8:39 AM
Tiny
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I need to see the wires you are connecting too.

Roy
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Wednesday, February 12th, 2020 AT 8:43 AM
Tiny
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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.
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Wednesday, February 12th, 2020 AT 8:52 AM
Tiny
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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.
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Wednesday, February 12th, 2020 AT 9:05 AM
Tiny
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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.
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Wednesday, February 12th, 2020 AT 9:09 AM
Tiny
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Those wires are for the vent solenoid on the fuel tank.

Roy
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Wednesday, February 12th, 2020 AT 9:14 AM
Tiny
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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.
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Wednesday, February 12th, 2020 AT 9:18 AM
Tiny
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You just said all the wires match up except the pink and white.

Can you explain?

Roy
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Wednesday, February 12th, 2020 AT 9:22 AM
Tiny
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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.
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Wednesday, February 12th, 2020 AT 9:33 AM
Tiny
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If you look at my first photo I posted there is two pink wires.
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Wednesday, February 12th, 2020 AT 9:34 AM

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