I have a hb 698 on my console and a hb 768 on bow both have the quick connect base, I would like to be able to put the 698 up at bow when tight lining so i could use map card, will the 698 work with the 768 2D transducer?

I understand the SI and DI will not work, but will the unit come on and work in 2D...figured I would ask instead of hurting something.

I just do not tight line enough to really justify another unit...