After many frustrating hours and trying every fix suggested, I no longer have noise on my display:HB 997 csi2007 BC PIVMotorguide Tour 82.Remove the choke – you dont need it – it costs you about 1 mphGround the TM battery (-) to the starting battery (-)Run a dedicated ground wire from the battery (-) to the front of the boat for the electronicsThe repair shop added a ground wire to the (-) brush of the TM and routed it through the sleeve to the foot control.Connected that wire to the dedicated ground wire.Seperate the transducer cable from any power lead (make sure you dont pinch the cable when rsising the TM)POOF – no more noise.jwt