I just installed a Humminbird 798c SI on the console and a 788 ci on the bow of my 2002 Lund Explorer 1650 SS. I have a MinnKota Terrova trolling motor with the universal sonar 2. I put it in the water today for the first time. No problems with the 798c SI. I idled around until I located a school of fish in 30 FOW. Dropped in the Terrrova and powered up the 788ci the interlink synched up fine. I went trough the menu and set the sonar to Universal Sonar 2. Console graph was showing fish, the bow was not. Temp, speed, depth all read the same on both units. As soon as I turned on the trolling motor the front unit jumped to 500+ FOW and showed a screen full of interference. All sensitivity levels are still at the default levels. As soon as I shut the trolling motor off or run it at extremely low speeds it reads the correct depth, but still is not showing the same arches that the console unit shows. Both units are wired to individual 3 amp accessory fuses on the console that are provided by Lund. The GPS works great on both units. I did swap the units back an forth, they seem to exhibit similar problems when attached to the Terrrova/US2 in regards to loosing their mind when the motor is ran. ? I am still learning how to use these so my knowledge is pretty limited at this point. I have not messed with any of the default sttings that I can think of. I have only had my Vexilar FL-20 attached to the Terrrova in the past and that seemed to work just fine. Any recommendations?
April 19, 2009 at 12:47 am #1237340