While it worked fine early on, long-term use has shown that this fuse can fail—interrupting motor function. If your OGO™ ORIGIN Compost Toilet is still running the 2/8/22 wiring harness, it’s time to bring it current.
This version of the harness includes an inline PTC fuse wired on the red power lead and a three-wire timer labeled as the “old timer” in the wiring diagram.
Wire Diagram 2-8-22
Why You Might Be Here
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Your motor has stopped running and there are no visible obstructions
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You’re seeing intermittent or total failure of the mixing function
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You’ve confirmed you're using the 2/8/22 harness (check for the inline fuse on the red wire and a three-wire timer)
Step 1: Identify Your Harness and Components
Refer to the diagram you have or check the following on your actual wiring:
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Red Wire: Runs through a small cylindrical PTC fuse before entering the lower 2-pin connector
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Three-Wire Timer: Connected to motor and fan controls; no direct ground wire
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Wire Colors:
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Red → Power input (fused)
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Black → Common ground
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White → Sensor/fan signal line
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Step 2: Remove the PTC Fuse
Tools Needed:
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Wire cutters
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Wire strippers
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Heat-shrink butt connectors or crimp terminals
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Electrical tape (optional)
How-To:
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Power down the unit and disconnect from power.
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Locate the PTC fuse on the red power wire running to the lower input plug.
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Cut out the fuse completely.
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Strip the ends of the red wire on both sides.
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Reconnect the wire using a secure method (solder and heat shrink, or a crimp connector).
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Reconnect power and test to see if the motor resumes operation.
This is a solid short-term fix—but the better move is upgrading entirely.
Step 3: Upgrade to the New Timer and Wire Clips
We’ve improved the wiring system since the 2/8/22 harness. The new version uses a four-wire timer, eliminating the need for a PTC fuse and offering more reliable current handling.
Benefits of the Upgrade:
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No more inline fuse
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Dedicated ground and fan leads
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Simplified troubleshooting
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Improved long-term reliability
Upgrade Instructions:
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Remove the old 3-wire timer and clips.
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Install the new 4-wire timer and plug system.
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Match the new wires based on function and color. Refer to your upgrade kit or follow this breakdown:
Wiring Color Match (New vs. Old):
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Red (new) → Red (old) – Power input
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Black (new) → Yellow (old) – Ground (formerly labeled black in the diagram)
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Green (new) → White (old) – Fan signal
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Yellow (new) → Optional additional control/sensor (depends on board update)
Always double-check polarity and labeling on the timer module itself before finalizing connections.
Step 4: Final Test and Close-Up
Once your new timer and wiring are in place:
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Reconnect all plugs
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Power up the system
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Run a cycle and confirm motor and fan performance
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Ensure no excess heat or disconnection at joints
If everything checks out—you’re done. You’ve future-proofed your OGO™ ORIGIN wiring and solved a known long-term weakness.
Need Help?
If you’re unsure about which harness you have or want to order the upgrade kit, email us at sales@ogotoilet.com. We’ll get you what you need.