Black tank fills when filling fresh tank

[Cosmik Debris]

If it doesn't happen EVERY time then rule out wrong plumbing, it doesn't vary back and forth. Could it be that you think its filling the black tank but may not have been emptied or the fill level lights are just showing full?

[Jerald61]

This is what I used to get picture to post. When you are submitting a post, or making a reply, click the Go Advanced button below the window you are entering your text. That will end up redrawing the page a bit so just scroll down again until you see the text window.

Keep scrolling to find the Additional Options section, and in that section is a button for Manage Attachments. Click that and it opens up a new (separate) window. In that window click the Browse... button to find the picture you want to upload. Repeat for additional images, then click the Upload button. After that (it may take a few seconds or a minute depending on # of pictures and size), find the Close this window button.

That should return you back to where you were typing text. At that point, click Submit Reply and you should be good to go. My picture was a GIF, JPG usally work better for me.

[2 wheelin]

had exact same problem. thanks to posts fixed it! operator error. 2 inlets for water. top 1 is correct. bottom is to flush. came in late, tired, did not even see top one. thanks again

[Jagiven]

Originally Posted by 2 wheelin

had exact same problem. thanks to posts fixed it! operator error. 2 inlets for water. top 1 is correct. bottom is to flush. came in late, tired, did not even see top one. thanks again

Welcome Aboard!

I do not like that some of the wet bays have white connectors for both the FW fill and Black tank flush. And that they are so close to each other.

If you have that combination, personally, I would put a special cap on the Black tank flush to be a good strong reminder which one to use.