Wiring question... Terrova and Helix connect to same battery??

[jake8484]

I am setting up my boat with a Minn Kota Terrova on the bow with a bow mounted Helix 5 Hummingbird and then a Helix 7 Hummingbird at the back of the boat. I just read that wiring a fish finder/electronics on the same battery as the trolling motor could cause interference with the sonar/Down imaging. Have any of you experienced issues with this? It would be so much easier just to use the same battery in the bow for both the Terrova and Helix 5 Hummingbird. The Terrova has the Dual Spectrum Chirp transducer built in and will connect to the Helix 5 and I want to be sure to get everything I can out of it.  The Helix 7 in the back of the boat will have it's own transducer on the transom.

What do you think?  Should I just run the extra wire all the way from the back and link in the two Hummingbirds off the Outboard's starting battery?

 

[Fishmaster 196]

Run the separate wire.  I ran wire from the rear battery to a blue seas fuse panel under my dash and then connected the front graph,fishhawk and other things to that.

[chowder]

What Fishmaster said

[jake8484]

On 4/25/2024 at 8:48 PM, Fishmaster 196 said:

Run the separate wire.  I ran wire from the rear battery to a blue seas fuse panel under my dash and then connected the front graph,fishhawk and other things to that.

 

On 4/26/2024 at 6:13 AM, chowder said:

What Fishmaster said

Thank you both.  So do you both believe that if I run the Terrova and and fish finder off the same battery I will get interference?

[Fishmaster 196]

  I have heard that you MAY have interference issues with it so I avoided it.  Try it out and if you do rewire it separately.