OK, since the OP hasn't come back to this thread, I thought I would post my experience. I ordered and received an aftermarket PG-5G programming cable for my Kenwood TM-D710GA dual bander. This aftermarket cable has the 5-pin mini din connector for the radio side, to a 9-pin D female serial connector. I set up my Kenwood to output GPS data (the 710G has the built-in GPS) to the COM connector (on the back of the control head). This is done on menu 500, GPS SETUP 1, COM OUTPUT : ON. Then on menu 929, AUX, COM PORT BAUDRATE, I set to 9600, the lowest rate.
I then set up the Uniden BCD536HP serial port to 9600 baud, under the "Set Your Location" menu, "Set Up GPS", "Set Serial Port".
I connected the cable to the respective ports (mini-din to the Kenwood control head, and 9-pin serial to the back connector on the Uniden).
Voila!!! The GPS indicator immediately showed up on the 536HP display, and the scanner position was set from the Kenwood! It will work! No need for an extra GPS cluttering up the dash, just the PG-5G cable (see here:
Programming Cable Kenwood TM D710 TM V71 PG 5g PG5G | eBay).
Let me know if you have any questions.