I have a minnekota 12v 55# thrust t.m. universal sonar 1 and I want to buy a fish finder with gps and color( you know, step into the 21st century technology:D) but I am having a hard time trying to find an adapter cable that will connect from the tm to the fish finder. I've checked with minnekota and the list of fish finders didn't include any of the newer units( the Eagle Elite 642ci gps is the one I'm interested in) so it seems I'll have to change trolling motors or bypass the universal sonar and mount the transducer on the t.m. head which defeats the purpose of having the universal sonar. Any ideas would be apprerceiated. Thanks, Doug