CA, I use a HB999 on my bow with the transducer mounted on the trolling motor. I put the transducer in a transducer shield and I can not use the SI. DI and sonar work fine. On mine, the left side SI is black. Who knows.
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CA, I use a HB999 on my bow with the transducer mounted on the trolling motor. I put the transducer in a transducer shield and I can not use the SI. DI and sonar work fine. On mine, the left side SI is black. Who knows.