How To

How to Mount the Transducer on Trolling Motor?

An electric motor mounted on the bow allows you to control the direction of your boat during fishing. Installing a fish finder on the front of your ship will allow you to see the fish in the area under your boat and control the depth of the water with the naked eye. A fish finder requires a transducer to transmit and display the information on the screen. Mounting the sensor to your trawl mounted on the bow will provide your fish finder with updated information as your boat enters new fishing zones. You can have a look at our most powerful trolling motor battery guide to choose the perfect one for your boat.


  • Turn the endless screw of a stainless steel tube clamp counterclockwise with a 5/16 inch wrench to open the clamp to the size of the drive motor plus the transducer.
  • Set the back of the transducer on the bottom of the traction motor, away from the propeller.
  • Slide the stainless steel tube clamp over the drive motor and transducer base. Tighten the clamp with the 5/16 inch nut driver. Apply two drops of compound thread to the threads of the locking worm when you have a turn until the clamp is tight.
  • Shield of the worm with silicone sealant.
  • Pull the cable that goes from the transducer firmly to the drive motor shaft. Attach the cable to the pole by placing a wire strap around both the transducer cable and the drive motor shaft. Pull the taut wire loop to hold the cable in place. Place a tie-down wire every 4 inches until you reach the top of the drive motor.
  • Connect the transducer cable to the back of the fishing probe.

Transducer Installation Options

Installation in the Aft Mirror: 

The lighting in the transom, which by the way is the most used, allows placing the transducer on the outside of the hull of the boat. This technique prevents signal loss and helps adjust the sensor after installation. The included installation bracket is designed to protect both the transducer and the ship in case it rubs with low funds or during transit to the trailer.

Installation in the Drag Motor: 

The standard transducer can also be installed in most drag motors, using different accessories, such as flange support.

Portable Installation: 

The standard transducer can be adapted to mobile installations thanks to the exclusive Humminbird portable installation kit. This accessory incorporates a suction cup that, adhere to the sensor, allows the temporary installation of it in the hull of the boat or any other surface.

Installation inside the helmet: 

As an alternative to the plant in the transom, you can stick the transducer inside the fiberglass hulls. Since fiberglass has sound transmission characteristics similar to those of water, the sonar signal passes through the shell of the vessel with minimal signal loss. The hull of the boat must be of a single layer (never double). Also, any air bubbles trapped during the lamination process of the fiberglass would prevent the sonar signal from crossing the helmet. This type of installation does not require holes in the hull and over time, a large-scale operation is achieved
speed similar to the installation in the transom. To stick the transducer to the hull, use two-component epoxy and slow drying.

Boat Hull Transducers: 

To install these transducers, it is necessary to make a hole in the hull of the boat. This type of installation is required for large vessels or boats with inboard engines since the amount of turbulence they cause makes the installation in the transom ineffective. Hulls that are too thick or double layer or those made of materials such as wood or metal (which prevent the conduction of sonar signals) are not advisable for the installation of the transducer inside. The lighting through the hull may require the use of a block to level the cowling transducer line floatation. For this type of plant, contact qualified technicians. Simply Clearly.

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