How to Install a Dynamo Hub

• Allen key set
• Torx key set
• 8 mm open end wrench
• Slotted screwdriver
• Flush cut pliers or wire stripper
• Combination pliers or long-nose pliers
• Lighter
• Torque wrench (optional)
• Repair stand (optional)
• Pick tools (optional)
• Internal cable routing kit (optional)

• Hub dynamo wheel
• Front light and, if necessary, a rear light
• Electrical tape, cable ties or cable covers
• Brake cleaner and a cloth
• Double-core connection cable with flat connectors on one side
• 2x 2.8 mm flat connectors and matching heat-shrink tubing

Remove your old front wheel and move your tire system to your new hub dynamo wheel. Mount the wheel tightly and centered in the dropout. Make sure that the contact plate is aligned correctly so that the connector can be easily attached later.

Attach the bicycle front light to the intended location – usually at the fork head or with an additional mount on the handlebar. Position the light vertical above the front tire.

Some modern gravel forks have special holes or cable channels for internal cable routing. It's best to take a close look at your model before proceeding with this step.

Route the connecting cable from the front light along the fork leg to the hub dynamo. You can use cable ties, insulating tape or self-adhesive cable covers to fix it in place. Clean the fork leg with brake cleaner or alcohol before gluing. It is important that nothing is left hanging loosely at the end.

Route the cable to the contacts on the hub dynamo and shorten it slightly below with the flush cut pliers if it is too long. Separate the two wires to a length of approx. 5 cm and remove approx. 1.5 cm of insulation on each side. Then twist the ends.

Next, take the slotted screwdriver and carefully open the plastic plug. Insert the black and white ground cable into the side of the flat connector marked m or ⏚. Insert the black positive cable into the opposite side. Then you have to fold over the protruding ends and reassemble the plug.

Connect the flat plug for the bicycle front light to the dynamo until you feel it click into place. Test the light by turning the wheel manually - the light should light up and not dazzle approaching traffic.

Mount the rear light on the pannier rack or fender, depending on your model. For a touring gravel bike, the most common mounting locations are behind the seatpost or on the seat stay, near the brake caliper – when using bikepacking bags. In preparation for the next step, you can connect the side of the light cable with the connectors to your rear light now.

If your gravel bike doesn't have fenders, it's best to go straight to the next point. If fenders are mounted, you now need to route the cable on the inside. Before you fix it there with electrical tape, we also recommend a thorough cleaning.

If you are routing the cable along the frame, you can use cable ties, insulating tape or cable covers that can be stuck on to hold it in place. Before you start gluing, you should also thoroughly degrease the frame with brake cleaner.

If your frame has integrated cable channels with large openings, we recommend routing the cable along the rear wheel brake hose. To do this, attach the cable to the brake hose with electrical tape and then reposition the brake hose and cable. If your channels are wide enough, you can also push a bowden cable through from one side and use it to pull the light cable through.

Our expert tip: With a set of pick tools, the ‘fishing’ action becomes a lot easier. A set for internal cable routing can also be helpful here.

If necessary, shorten the cable towards the fork, but make sure you can still turn the handlebars in both directions. To ensure that you allow enough leeway, you can also form the light cable into a spiral with 10 turns around a screwdriver.

Carefully separate the two wires from each other over a length of about 5 cm and remove 1.5 cm of insulation from each wire end. Then slide a piece of heat-shrink tubing about 2.5 cm in length onto each side. Now you can insert the twisted copper ends into the flat connectors and crimp them with the pliers. Finally, slide the heat-shrink tubing over the sleeves and heat them with the lighter until they fit tightly and flush on the sleeve.

Connect the cables of the rear light to the cable lugs of the bicycle front light. Pay attention to the polarity – connect the black and white ground cables and the black positive cables with each other. If all the lights are flashing when you turn the front wheel, the hub dynamo installation was successful – don't forget to switch on the bicycle front light.