Second Transducer wire to Garmin how?

[Johnatkatys]

The Garmin chart plotter in my 2017 RT-25SC will accept a second transducer input, but I'm looking for some advice on routing the wire from the transducer, which I intend to mount in the starboard aft lazarette. The wire from the original transducer appears to be fixed someplace and I don't think I can use it to pull a second wire from lazarette to the back of the Garmin.

Has anyone ever pulled a wire, any wire! from an aft lazarette to the helm control panel? How did you do it?

 

[Hamster]

I ran a second transom mounted transducer in my R-23. The cable went from aft to behind the galley cabinets to the Map Unit in the helm. I needed a Garmin cable extension for length. Pulled cable with wire puller. Curious what kind of transducer would work in the starboard lazarette.

 

[jeffhowell1]

I have a 2011 R-27. A couple years I replaced chartplotter with new 8612xsv.
My original transducer, in-hull Airmar P79, worked intermittently and is impossible to access where originally installed, starboard aft just forward of transom. I had thru-hull transducer, Airmar B619 w/Garmin 8-pin connector, installed on port side next to engine opposite water intake about a year ago. Works fantastic down to 1000’ and never loses bottom reading.

Here’s the thing, both transducers are connected to 8612xsv chartplotter but you have to choose one on chartplotter, cannot use both at same time.

I paid yard to pull cable and install transducer. Much smaller guy than me worked on this project. Cable was run behind galley, as mentioned above. Pulled stove for access, may have to pull refrigerator as well. My galley is on starboard side, same as chartplotter.

 

[Johnatkatys]

I ran a second transom mounted transducer in my R-23. The cable went from aft to behind the galley cabinets to the Map Unit in the helm. I needed a Garmin cable extension for length. Pulled cable with wire puller. Curious what kind of transducer would work in the starboard lazarette.

First, the transducer I found was the Garmin GT15M. (In Hull) This gives me CHIRP, but no more. I hope that's enough.

Second, I think I can see what looks like a 4" PVC tube with an opening in the forward part of the lazarette. There's a lot of wires from the engine compartment headed into that tube. If I can get my wire puller into that tube, will it come out near the helm?
That was the real question. It doesn't look like a straight shot so I'm worried if I'll be able to find a path. Theres a lot of stuff to go around, water tank, fuel tank, and goodness knows what else.
Tell me about your fish & pull experience 🙂

 

[Johnatkatys]

I have a 2011 R-27. A couple years I replaced chartplotter with new 8612xsv.
My original transducer, in-hull Airmar P79, worked intermittently and is impossible to access where originally installed, starboard aft just forward of transom. I had thru-hull transducer, Airmar B619 w/Garmin 8-pin connector, installed on port side next to engine opposite water intake about a year ago. Works fantastic down to 1000’ and never loses bottom reading.

Here’s the thing, both transducers are connected to 8612xsv chartplotter but you have to choose one on chartplotter, cannot use both at same time.

I paid yard to pull cable and install transducer. Much smaller guy than me worked on this project. Cable was run behind galley, as mentioned above. Pulled stove for access, may have to pull refrigerator as well. My galley is on starboard side, same as chartplotter

 

[Johnatkatys]

Ugh. My Garmin Chartplotter can have two transducers but it shows them side-by-side. It does not integrate the picture. That's okay. If the Garmin GT15M one works well enough I'll probably just use that all the time. Mine is a 2017 RT25 inboard. (which makes transom mount not an option)

 

[Hamster]

First, the transducer I found was the Garmin GT15M. (In Hull) This gives me CHIRP, but no more. I hope that's enough.

Second, I think I can see what looks like a 4" PVC tube with an opening in the forward part of the lazarette. There's a lot of wires from the engine compartment headed into that tube. If I can get my wire puller into that tube, will it come out near the helm?
That was the real question. It doesn't look like a straight shot so I'm worried if I'll be able to find a path. Theres a lot of stuff to go around, water tank, fuel tank, and goodness knows what else.
Tell me about your fish & pull experience 🙂

Your boat build is likely different but I was able to fish the cable in stages. First from my transom to the lazarette, then to behind the galley cabinets (I can see hull when opening cabinet), then to Map Unit.

Check your Garmin manual. My unit can show both transducers together or separate. I’d suspect your does, too.