This article shared by t-tony from zroadster.org forum.It show a guide on how to remove and disassemble instrument cluster for BMW Z3.Thanks for t-tony nice write up.And if you want to get more about BMW projects,check here:BMW Repair Cases
What Tools You Need?
1.T20 1/4? drive socket and ratchet.
2.Small flat bladed screwdriver.
3.A plastic card ( American Express is good because no one accepts over here.lol.) or similar.
4.A pair of long nosed pliers.
5.A very small torx key
BMW Z3 Instrument Cluster Removal:
Firstly you will see 2 self tapping screws which hold the cluster to the dash board at the top of the binnacle. These are size T20 torx screws and I used a socket and ratchet to loosed them and used the socket to screw them out with my fingers.
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This is where the credit card comes in, you need to slide it between the lugs which the screws fit through and the outer housing, moving across both sides to ease the cluster out of the dash, I also had a small screw driver as a lever to help.


When you have the cluster free of the dash move it to the right side. At the rear of the cluster there are 3 wiring loom connectors. These are colour coded, blue, black and white and these correspond to a blue, black and white sockets on the instrument housing. The connectors are locked in by a lever which you have to release to allow the connector to be pulled out of it
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