Hello. I have searched Hi and Lo(pun intended) for a holding tank wiring diagram. My tanks use 5 level sensors. Can anyone help. This camper is about a 1990 model.

Thanks20200418_164546.jpg
20200418_164539.jpg

Jeffd39, I have the same panel. the fresh tank is enclosed so I can't see how that's wired, but here's the color of wires for the GREY tank from the top down:
blue
yellow
orange
black
and red
For the BLACK tank:
blue
yellow
orange
black
green
Sorry, can't help on the fresh, but I do see a pattern, just don't know that last color.
Hope this helps,
Tree

__________________
Treeclimber
2703 Tow Lite
2002 Escalade
Bonita Springs, Fl. &
Andrews, NC

My fresh water tank is:

Blue
Yellow
Orange
Black
White

Do you happen to know the wiring at the panel?

Jeff, give me a day or so, I'm opening my shop in NC and things are a bit busy. I know that only one set of all colors go to the panel, then somewhere they branch to the tanks. I haven't found area yet. When I tested the monitor, all showed empty as they should have. testing tank depth is in the future.
Tree

__________________
Treeclimber
2703 Tow Lite
2002 Escalade
Bonita Springs, Fl. &
Andrews, NC

Thanks! I am not in a huge hurry. I still need to install the the tanks and monitor, then get it all wired. I will be a few week or a month before I am at that point.

Also, the only two wires on my panel that do not match a wire color with the sensors is a purple and a brown

Mine is an '86, so their may be a slight difference. Where you have a white makes sense for the fresh tank. Mine is most likely the same. I'll check where those monitor wires go to and we'll find out together.

__________________
Treeclimber
2703 Tow Lite
2002 Escalade
Bonita Springs, Fl. &
Andrews, NC