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Navman fish finders Printed From: The Fishing Website Category: Saltwater Fishing Forum Name: The Briny Bar Forum Description: The place for general chat on saltwater fishing! URL: https://www.fishing.net.nz/forum/forum_posts.asp?TID=126111 Printed Date: 21 Jun 2026 at 11:44pm Topic: Navman fish finders Posted By: Duan Subject: Navman fish finders Date Posted: 05 Nov 2017 at 8:56pm Hi there I'm a super extreme novice with this stuff so I'm looking for help with my fish finder I had a Navman fish 4200 that the screen was all blacked out on so I have bought a Navman fish 4350. The 4200 had a black cable and a blue cable plugged into it. The new 4350 I've purchased only has a socket for the black cable to plug in. So as I have not taken it on the water yet my question is. What does the blue cable do and do I need it or can I just leave it out ?????? Cheers for any advice Replies: Posted By: Dunwurkn Date Posted: 05 Nov 2017 at 9:26pm Pretty sure Black is the power cable and blue is the transducer cable input. Some units also have a white which is for the optional fuel flow meters. Check the unit again there can't only be the one input. Check there is not a protection plug in one of the other inputs which will need to be removed. It's basically just a cover to stop dust/water ect getting into the input.

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