Have you tried a brake line fitting...looks like it's a flare fitting to me. My trucks have a 1/8" npt on the inside side of the check valve...looks like you have a 90* fitting attached to the check valve that converts it to flare.
The reason the general truck guys weren't able to help is the small trucks don't have the vacuum check valve on their firewalls, their wiper vacuum line just goes through a grommet.
To post pictures I do the following;
Click on "Use Full Editor" in the post/reply box.
Then scroll down and and click on "Attachment Manager" in the Post Options section.
Then split your monitor screen with Stovebolt open on one side and your photo file open on the other side.
Click on the photo you want and Drag and Drop the picture over to the Stovebolt side and your done (as long as it's not over sized)!
Hope this helps,
Mike B
