I used a BC-SGPS GPS kit for my bcd436 and it worked fine. Now I have a sds100 and I need a different serial cable. Well , I lost the extra cables thant were in the box. Now I need a rs232-mini usb cable I ordered on AMZ and it didn't work, $9. Does the correct one have a chip in it? Hate to by another kit. I used all baud rates and it didn't work. In fact I installed the 436 and the gps icon still I know the kit is still working.