Flex Fuel and Evap help (C309 connector)

Hi all, and thanks for checking out the thread.

I have a 2000 Ranger 3.0 Flex, and I currently have two DTCs, the infamous P0176 and P1451. I highly suspect that the C309 connector is the one causing me the troubles (at least for the P0176 code) because I've bought a Flex Fuel sensor replicator from Point A Engineering and that did not resolve the issue.

I also have a replacement vent solenoid to hopefully resolve P1451, but here's where it gets tricky. I was able to disconnect and clean out the male part of the C309 connector and it looked decent. None of the pins were severely damaged and I took a soft brass brush along with some electrical contact cleaner to the pins and then applied dielectric grease to the pins and reconnected. I did notice that some of the wires had been cut next to the connector but on the loom they were connected to some cables coming out of a grommet next to the C309 connector.

However, when I tried to inspect the female side of the connector, under the driver's seat I noticed the wires for pins 5, 6, and 7 were cut and then routed through the grommet, essentially bypassing this connector.

Now, I understand that pins 1 and 5 are the two ground connections, both part of the same circuit (57) but I'm thinking that half of the components may use pin 1 and the other half use pin 5 to ground. Now the easy fix would be to just reground pin 5 however I have a few questions about this.

1. What are pins 6 and 7 used for? I want to know this so that I can know what is having the connector bypassed.
2. What are the connections for the fuel composition sensor? I found a reference of it being circuit 21 which would make it pin 20 (dark green/light green) but I want to confirm this.
3. What would you all suggest to resolve my two DTCs? Would just regrounding pin 5 resolve the issue? Should I look into bypassing pin 20 as well?

I apologize for the very long post, but I find that being as thorough as possible helps a ton. Also, I know a multimeter would help immensely in this however mine broke and I'm waiting for it's replacement.

I sent you the schematics, but did not look at your problem.

Once you've had a chance to look through them, if you discover that you need another page or 10, send me another PM. I still have the book. Don't be shocked if I send you photos of pages, rather than .pdfs.