Help! Humminbird Transducer dilemma!

[LP59]

I have a 1998 Bass Boat that has a Humminbird XNT 14 74 T transducer epoxied into the hull. It works great with the Onix that I sold to my nephew. I now have a Helix 10 MSI and a Helix 5. The Humminbird XNT 14 74 T is under the gas tank with no way to remove it without completely dismantling the gas tank, batteries etc. (we would have to remove everything from the gas/battery compartment.). There is no other place for such an in-hull transducer. Can I wire a helix pigtail to this transducer. (I have a pigtail and journeyman low voltage electrical experience & knowledge). Can you please give me the wire color hook up information. The wire colors in the cable are Yellow, brown, black paired with a Black wire that has a White stripe, in its own foil Shield. There is an overall foil shield and bare drain wire. Thank you in advance for your help!

[Wayne P.]

Do not have to cut the plug off. The Minnkota MKR-MI-1 will adapt the 14-pin plug to 7-pin.

The XNT 14 74 T is 50/200 kHz

Don't have a pin-out for the 14-pin but this is the #9 connector for a HDSI transducer:

[LP59]

Thank you Wayne for your response.

I contacted Humminbird about the MKR-MI-1 adapter, Kimberly said it will not work. After stating that the Helix 10, would work with an XNT 14 74 T transducer if a used an AD 1429. However I pointed it out that this adapter doesn't mate with the transducer.

"Kimberly
06:32 am
I believe you would be able to use the AD 1429. https://humminbird.johnsonoutdoors.c...-adapter-cable
This will change the connection for it to plug into a Helix unit.

After that it kept going downhill, until they told me that the Transducer will not work with a Helix... ...would not assist me in splicing because they don't recommending splicing any of their products.

"Kimberly
06:54 am
I will advise we don't recommend splicing the transducer cable. I can only tell you that we don't offer any cables to make this happen. I was also informed that the Onix/Solix transducers won't work on the Helix unit. Which I figured the frequencies would but I was mistaken.

Kimberly
06:57 am

I am not able to provide information on the transducer splicing as we do not recommend this.
"
Unless someone can be more helpful than Humminbird was during our hour and 15 minute communications... (Helpful might be the wrong word there???)
I guess I will be dismantle my boat this Spring after thaw out, pulling the gas tank etc.

I did order the adapter cable you suggested. However Humminbird states that it won't work, and they won't tell me why.
I am frustrated with Humminbird.

If you have any other advice or information, I would appreciate it.
Thanks
Dave

[Wayne P.]

Thank you Wayne for your response.

I contacted Humminbird about the MKR-MI-1 adapter, Kimberly said it will not work. After stating that the Helix 10, would work with an XNT 14 74 T transducer if a used an AD 1429. However I pointed it out that this adapter doesn't mate with the transducer.

"Kimberly
06:32 am
I believe you would be able to use the AD 1429. https://humminbird.johnsonoutdoors.c...-adapter-cable
This will change the connection for it to plug into a Helix unit.

After that it kept going downhill, until they told me that the Transducer will not work with a Helix... ...would not assist me in splicing because they don't recommending splicing any of their products.

"Kimberly
06:54 am
I will advise we don't recommend splicing the transducer cable. I can only tell you that we don't offer any cables to make this happen. I was also informed that the Onix/Solix transducers won't work on the Helix unit. Which I figured the frequencies would but I was mistaken.

Kimberly
06:57 am

I am not able to provide information on the transducer splicing as we do not recommend this.
"
Unless someone can be more helpful than Humminbird was during our hour and 15 minute communications... (Helpful might be the wrong word there???)
I guess I will be dismantle my boat this Spring after thaw out, pulling the gas tank etc.

I did order the adapter cable you suggested. However Humminbird states that it won't work, and they won't tell me why.
I am frustrated with Humminbird.

If you have any other advice or information, I would appreciate it.
Thanks
Dave

The MKR-MI-1 will connect any 14-pin SOLIX transducer, a MEGA 360 transducer, or Minnkota Built-in MDI or MSI transducer to a Helix 8 and larger display.
Won't work with a Helix 7 for DI or SI since the DI circuits are different.
It's the short version of the 14-pin to 7-pin adapter that is included with a MEGA 360.
The 2D piezo connection is at the same place on every one of them.

I have all those cables, Helix and SOLIX units and use them so I know for sure they work.

The AD1429 converts a 7-pin transducer to 14-pin unit (SOLIX or ONIX) which is just the opposite of what you need.

When you connect the 50/200 kHz transducer to whichever Helix, you have to change the Connected Transducer setting to match it. There is no setting for MEGA Side Imaging and 50/200 kHz so you would loose 50 kHz quality with a second generation Helix MEGA SI model (would have 83/200 kHz) and have no capability for MEGA SI+ with HW CHIRP 2D sonar on a Helix G3N or G4N.

For a match of the shoot-thru you would only have 2D sonar by using the HB 50/200 kHz setting

[LP59]

Thank you Wayne! Great news. I have the MKR-MI-1 adapter cable ordered up. I'll report back as soon as I get it. MKR-MI-1