Hi MacPhee - when you said you sourced your TPMS through ebay, what did you get? I got a set of 4 JX OEM sensors for $135! They have the right part number and are made by Continental, and had the right "nut collar". I have them installed in my new Murano 18" wheels (same offset, width, center bore), with the DM-V1's mounted, ready to install.
So, what sensors do you have? I hoped to use Orange Technology which are programmable, so you clone the OEM numbers onto them. They don't have for the JX/PF/Altima yet (those 3 cars are the same part number). I read another forum member put a new set of OEM sensors on his JX, disconnected the battery, and the car magically read the new sensors after a while (45min?). What did you do for programming?
Thanks for your help.