You will also need to tap 3 wires, VSS, Reverse, and Parking brake. I tapped the VSS and parking brake wires at the cluster. Use an allen wrench to remove the two screws holding it in place and then slowly pull it out. You will need to leave the X powered because you will have to drop the steering wheel to get to it. Here is a write-up on how to remove it -
http://www.xoutpost.com/articles/x5/i...t-cluster.html.
You can also find these wires in the online WDS. My cluster has 3 connectors on the back. Two are toward the passenger side and one is toward the driver's side. The VSS wire comes off the top connector on the passenger side. It is a black-white wire. I tapped into it with the pink\lavendar wire here.
Although you can tap the parking brake wire from the traditional place, I decided to tap it here because I was already in here. The parking brake wire is on the connector that is on the driver's side. It is one of the few wires that have 3 colors. It is blue-brown with yellow tick marks.
The reverse wire will require some work as directly connecting to one of them is not a good idea. The problem is that the power is sent out in pulses instead of a steady stream. The Z1 allows you to monitor the connection. When I put the X in reverse and monitor the status it changes from High to Low (Back Signal on Z1). It should always be High. To make it work correctly you need to get a relay
http://www.xoutpost.com/x5-e53-forum/...ighlight=relay.
I put the iPod in the glove box. I ran the cable through the hole where the strut is located. This has to be done with the glove box disassembled because you will have to remove the strut to get the ipod connector through the hole!
Oh by the way make sure you get an aftermarket radio harness that has all the wires. I got mine from a local auto shop but I think you can get it online. It has every wire, even ones that are not used. This one is much better than the one I got from Crutchfield (which I sent back). Try looking for it on BestKits.com, BHA9003.
