I have retro fitted BT TCU into 2003 Range Rover.

I ordered 8450 6928 461 (Bluetooth Antenna) but i used the lead from the old BIT II unit to connect it.

Now i realise these leads only plug into one place on the TCU even though it has multiple sockets. So what i'm thinking is i used the wrong lead to the antenna is plugged into the wrong socket?

Whats the part number for a bluetooth antenna lead for a EURO X5?

I think i used the WDCT antenna lead with the violet plug on TCU end.