GPS/ Tranducer wire routing

[mschneider2185]

Hello all,

I recently purchased a used AR240. It has a Garmin GPS/Fish Finder. The wiring for the transducer is run through the scupper valve. Is this going to be an issue? Seems like it shouldn't run through a valve made to help keep water out or am I over thinking this? I'm about to put my boat in a slip for the remainder of the season and dont want to show up to a sunk boat one day.

Thanks everyone!!

 

[Peter simon]

I have seen posts on here where a T is placed in the engine compartment along the scupper line and the wire runs in the scupper at the water side and they up through the T in the engine compartment. The the T with the wire coming out is sealed.

Which Garmin did you purchase? I am looking as well. I really wanted a 5" display which was discontinued by Garmin. With Garmin owning Navionics I am hesitant to purchase any other brand.

 

[Julian]

Hello all,

I recently purchased a used AR240. It has a Garmin GPS/Fish Finder. The wiring for the transducer is run through the scupper valve. Is this going to be an issue? Seems like it shouldn't run through a valve made to help keep water out or am I over thinking this? I'm about to put my boat in a slip for the remainder of the season and dont want to show up to a sunk boat one day.

Thanks everyone!!

No it shouldn't be run through the scupper valve, that risks a scupper leak if the hose leaks or comes off....it really should be installed properly with a through hull fitting at, above or as close to above the water line as you can get.

You can see my install here.

Looks like this when finished:

 

[mschneider2185]

I have seen posts on here where a T is placed in the engine compartment along the scupper line and the wire runs in the scupper at the water side and they up through the T in the engine compartment. The the T with the wire coming out is sealed.

Which Garmin did you purchase? I am looking as well. I really wanted a 5" display which was discontinued by Garmin. With Garmin owning Navionics I am hesitant to purchase any other brand.

I will look at the model number when I get back out to the boat. It came with the boat prior to me owning it.

I will also trace the line and see if it T's into the valve like you're saying. Thanks for the heads up!

 

[mschneider2185]

No it shouldn't be run through the scupper valve, that risks a scupper leak if the hose leaks or comes off....it really should be installed properly with a through hull fitting at, above or as close to above the water line as you can get.

You can see my install here.

Looks like this when finished:

Wow that's a clean install!! That will be a winter project for sure. the thought of it running through the valve just doesnt sit right with me. Thanks!

 

[zipper]

My boat came with a Tee installed on the scupper line right after it enters the engine bay. The "tee" part was "sealed" with duct tape. A PO had run the Hummingbird transducer cable down the scupper tube past the flapper and mounted on the transom. I did not like like this installation at all! I pulled the wire and rerouted it through the engine bay and drilled a hole in the transom above the waterline and ran the wire out and down the transom to the transducer. Sealed with 3m 5200. It was a safety thing for me, having a hole in the scupper tube just above the static water level, my M/Y the scupper exits below the waterline, always water in that tube. And the flapper never closed so water, while in reverse, under pressure would raise the level in the tube, although never to the tee. You can see the installations below, pay no mind to the dirty hull, it cleans up well.

 

[Compatico]

Wow that's a clean install!! That will be a winter project for sure. the thought of it running through the valve just doesnt sit right with me. Thanks!

As others have said, you're right...the valve's purpose is to prevent water intrusion, and the wire stops the valve from its purpose. All outboard units should be run through-hull ABOVE the water line so when slipped there is no chance of leaking/flooding.

 

[Peter simon]

So let me ask a question about the wire since I will need to be doing this soon...

Mount the transducer, run the wire through the fitting above the waterline. What about the loose wire. I have seen the wires just loose, I have seen them with the kind of holder like you would use in a house like above and i have seen a metal piece that covers the whole wire.

What is the preferred method of securing the wire?

 

[Compatico]

What is the preferred method of securing the wire?

Personally I would use a clip with sealant to secure the wire from too much movement halfway up the length of the wire on the transom. Water turbulence isn't that great in the area except just before planing speed when the stern is lower in the water creating a vortex behind the transom. At no wake and cruising speeds, it's not an issue at all. If you wake surf, then you'll want it secured well.

 

[rkim808]

No it shouldn't be run through the scupper valve, that risks a scupper leak if the hose leaks or comes off....it really should be installed properly with a through hull fitting at, above or as close to above the water line as you can get.

You can see my install here.

Looks like this when finished:

Aloha @Julian i’m installing my GPS/Fishfinder finally plenty of time now lol. But I want to duplicate ur install with this same through hull fitting. Can u please tell me where u got it from and size? Didn’t u mount the transducer to the ride plate too?

 

[Julian]

Linked in the post above is all the info on my transducer install. (click on the link text). Also includes the info on the parts I used.

Let me know if there is something missing!

You can also always find this info by clicking on the Yamaha 242X link in my signature. (if you are on a phone you won't see signatures in portrait mode-turn your phone on its side and you should see signature....unless you have a REALLY small phone screen resolution).