My Lowrance Elite 4x-DSI was installed on my Abaco until i replaced it with the Raymarine Dragonfly so i decided to install the Lowrance unit on the Tempo. Here's a run through of how i installed it including:
As with the Raymarine Install the process can be applied to virtually any kayak and fish finder where the transducer needs to be mounted inside the hull.
- Lowrance Elite 4x-DSI
- Scanstrut Deck Seal DS30-P for 30mm connectors and 9-14mm cables
- Scanstrut Deck Seal DS16-P for 16mm connectors and 2-8mm cables
- 12v 7Ah Sealed Lead Acid Battery
- 2-way Superseal Waterproof 12v Electrical Connector Plug
- Lock & Lock Watertight Rectangular Plastic Storage Container 1.9 Litre HPL818
- Block of High-density Closed Cell Foam
- RAM-B-101-LO11 Mount for Lowrance Elite-4 series fish finders - includes RAM 1" Ball Round Base with AMPS pattern, RAM Double Socket Arm for 1” ball and 1" ball Elite-4 adaptor
- Chopping Board – 10mm thick
- 1 m of 6mm bungee
- 4 x Trifold Rivets or Stainless Steel Bolts, Nuts and Washers
- Marine Goop
Step 1 - Making a Waterproof Battery Box
Cut the power lead, strip back around 1" of the wire, slide on the rubber seals, crimp the male connectors onto the wires and plug these into the back of the female connector. A piece of insulation tape tidies things up.
Step 2: Making a Battery Box Holder
Full instructions on how to made one can be found on the following linked blog post: Installing a Raymarine Dragonfly 5-Pro.
Step 3 - Mounting the Lowrance Elite 4x-DSI Head Unit
I wanted the fish finder mounted in the centre of the footwell just forward of the drinks holder
Step 4 - Installing the Transducer in-hull
- Scupper Mounted - where the transducer is fixed underneath the kayak either against the scupper hole or more commonly inside a purpose moulded transducer scupper with the transducer wire coming up to the head unit through the scupper hole.
- Arm Mounted - where the transducer is mounted on the end of an arm which goes over the side of the kayak. Ram Mounts make a flexible transducer arm that can be attached to the kayak via a ram ball that is fixed to the kayak or on a ram ball that is attached to the kayaks slide rails, if present. The arm can easily be moved in and out of the water to prevent damage when paddling over shallow rocks or when launching/landing.
- In-hull Mounted - where the transducer is either glued inside the kayak against the hull as a 'dry-mount' or placed within a small well against the hull that is filled with water as a 'wet-mount'. The dry-mount in-hull option appears to be the most common form of transducer installation, if scupper mounting is not an option, with Marine Goop or Sikaflex used as the adhesive to bond the transducer to the hull
The transducer needs to be pushed down into a big blob of Marine Goop on the keel line of the hull but you MUST ensure no air bubbles are present in the glue before pushing down the transducer. Air bubbles causes interference with the sonar reading. Practice building up a blob of marine goop on some scrap cardboard or wood so that you know how best to apply it. I found that squeezing the goop out fast seemed to prevent any bubbles from getting into the goop
I used a rectangle of foam with a hole cut in the centre as a well to hold the marine goop. The foam well was glued in place first before filling carefully with Marine Goop. I filled the well around 5mm deep.
Even after practicing you may get a couple of small air bubbles present in the glue - use the sharp end of a cable tie or something similar to scrape the bubbles out of the blob and use a small torch to illuminate the glue so that you can easily see where they are.