How to Replace the Timer in Your OGO™ Compost Toilet System

Whether you are upgrading or replacing a faulty unit, this guide will walk you through the process with clear steps and helpful tips.

What You’ll Need

• Replacement timer (should come pre-wired)

• Small flathead screwdriver (to help pry and release connections)

Step 1: Remove the Old Timer

Start by identifying the existing timer. It’s usually held in place with adhesive or clips.

1. Pry it loose: Gently lift the old timer using a flathead screwdriver if needed. Be careful with the wires.

2. Disconnect the wiring: The timer should have lever-style connectors. Lift these to release the wires. You’ll typically see four color-coded wires:

   • Red

   • Black

   • Green

   • White

Step 2: Install the New Timer

Before mounting the timer, connect the wires one at a time using the lever connectors on the new unit:

• Red to Red – This is your 12V hot line. After snapping the lever down, give a gentle tug to ensure it’s secure.

• Black to Black – This is your ground connection.

• Green to Green – This wire acts as the input trigger, allowing the timer to start.

• White to White – This is the output current that powers the motor.

Once all wires are securely in place, remove the protective tape on the back of the new timer.

Step 3: Mount the Timer

Find a clean, flat surface in the original mounting area. Press the timer down firmly so the adhesive sticks well. Make sure no wires are being pinched or stressed.

Final Check

Before closing up the system:

• Tug gently on each wire to confirm secure connections.

• Double-check that colors are matched correctly.

• Ensure the timer is seated firmly.

Timer Wire Color Reference