How to Replace the OGO™ Compost Toilet Wire Harness

Instructions to remove your old wiring harness, install the new one, and get your toilet system running clean, safe, and fully connected—no electrical experience needed.

Cut It Loose

Your old harness is zip-tied in.
Grab snips. Cut the ties.
Take your time—don’t nick the wires (even though you’re tossing them).
Pop out the bottom insert so you can get underneath.

Unplug Everything

Start at the top. That’s your button connection.
Unclip the yellow and green leads.
Now work your way down—red, yellow, green, black.
If the drain pan’s in the way, you can loosen it. Six screws, three on each side. You don’t have to take it off—just enough to make room.

Remove the Old Harness

Done unplugging? Pull the whole thing out.
Set it aside. Admire your handiwork.

Thread in the New One

The new harness may have extra stuff (like a fan)—don’t sweat it.
Start up top. Feed the wires through the small hole, one at a time.
Give yourself some slack so you’ve got room to move.

Plug It In

Yellow to yellow. Green to green. Red to red.
Make sure the fit is snug. Pull everything through cleanly.
Not zip-tying yet—we’ll get to that.

Final Hookups + Signal Check

Red = power
Black = ground
Green = trigger to timer
Yellow = signal from sensor

No sparks? No smoke? Great.
Once it all checks out, then go back and zip-tie the harness neatly into place.