Just a thought, could i install my GT52 on transom with the UHD and GT15??? All i would need is the Y-cable (010-12445-33)??? If all this is correct, then i could chose any ducer on the dash unit (UHD, GT52, GT15)....would the GT52 work in conjuction with GT15 or should i say would the GT15 cancel out the 2d sonar from GT52 and still use the side/clear vu??? Let me know if my mind is all twisted up....