well i figured i would give an update, i have yet to find anyone that has a decade capacitor box, but i did recieve three chokes from hummingbird, they are a bit larger and round and one piece compared to the square two piece ones i got from radio shack, i put one on the power one on the transducer and one on the gps like the nice girl at humminbird said to, i then put the other chokes i had on right where the cord comes out of the transducer, one where the wire comes out of the foot pedal and one where the foot pedal cord comes out of the motor and ofcourse i already had two on the main power cord for the trolling motor, this cleared it up about 95%, i believe i can live and fish with it effectively like it is now, not perfect but dang close. i do wonder though if i got another choke on the power cord and the transducer if it may take it all out?