If it's not in your way, I'd leave it and add a new one to prevent any chance of making a hole in the boat.īest of luck, please let me/us know what you find out, even if it is months up the road. Maybe on yours the builder gel coated over it so that it matched the bottom of the boat or maybe it is just epoxy mounted inside the boat? You won't know until the chisel cuts through. If it is embedded into the boat like mine is, you might end up with a hole. You can connect the wires as shown in the diagram at the top of the page using two accessory switches (not included), which switches the units lights on separately from the power, or you can wire the lights to the power switch as shown at the bottom of the page. I'd be very careful chiseling out anything from the bottom of your boat. The 3500 operates from 10 to 15 vdc (12-voltsystem). Therefore, I'm wondering on my boat if the threaded mount/base is glued/epoxy'd into the boat, and maybe the transducer sits in that base and is locked down by the compression nut. (either the transducer or the mounting plate is drilled through the boat) However, removing that nut doesn't appear to allow anything to move, and I don't dare try to force it out as I can clearly see the black circle under the boat (flush with the white gel coat), meaning some part of this is drilled and mounted through my boat hull. However, around the transducer is the nut with the compression part inside. The whole unit is epoxy'd or some type of resin based glue mount. I re-read my comment above and wanted to clarify the mounting of my transducer. I now keep a close eye on my battery liquid level. It will track the bottom at speeds over 70 m.p.h. Once it finds the bottom, the 3500 locks onto it and automatically adjusts the sensitivity and noise suppression circuits. Never did figure out why, as all factory fuses were good even though all components were blown. Dazzling gold-tone gauges create an upscale helm, while the cuddy is set. It will give you a water depth reading within seconds. Along with my stereo, base AMP, and fish finder. My 3500 unit got blown when my battery shorted out internally. Also, I read the transducer won't work with other units as they no longer use the same frequency on new units.īest to go with an aftermarket and attach the transducer to the back of the boat. (electronics in water will ALWAYS fail at some point)īest I can tell these are obsolete. Kind of interesting to think they drilled a hole through a boat to mount an electronic device. On the outside/under the boat, you can see a black circle (on an all white bottom boat). This is located under the motor in the bilge area. Mine is literally built into the bottom of the boat.įrom the inside of the boat you see a couple inch in diameter and couple inch tall black tube with what appears to be a screw down compression type cap. On my boat you can't miss the transducer. I have the same Lowrance 3500 unit in my 1992 Four Winns 190 Horizon.
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